linux.mk: move manjaro-unstable to broken target

See:

	$ make x86_64-manjaro-unstable-rootfs
	==> Creating install root at x86_64-manjaro-unstable-rootfs
	==> Installing packages to x86_64-manjaro-unstable-rootfs
	:: Synchronizing package databases...
	 core downloading...
	 extra downloading...
	 community downloading...
	 multilib downloading...
	resolving dependencies...
	:: There are 2 providers available for pacman-mirrorlist:
	:: Repository core
	   1) pacman-mirrors  2) pacman-mirrors-dev

	Enter a number (default=1):
	:: There are 2 providers available for dbus-units:
	:: Repository core
	   1) dbus-broker-units  2) dbus-daemon-units

	Enter a number (default=1):
	looking for conflicting packages...

	Packages (125) acl-2.3.2-1  archlinux-keyring-20240208-1  argon2-20190702-5  attr-2.5.2-1  audit-4.0-1  bash-5.2.026-2  brotli-1.1.0-1  bzip2-1.0.8-5  ca-certificates-20220905-1  ca-certificates-mozilla-3.98-1  ca-certificates-utils-20220905-1  coreutils-9.4-3  cryptsetup-2.7.0-3  curl-8.6.0-3  dbus-1.14.10-2  dbus-broker-35-2  dbus-broker-units-35-2  device-mapper-2.03.23-3  e2fsprogs-1.47.0-1  expat-2.6.1-1  file-5.45-1  filesystem-2024.01.19-1  findutils-4.9.0-3  gawk-5.3.0-1  gcc-libs-13.2.1-5  gdbm-1.23-2  gettext-0.22.4-1  glib2-2.78.4-1  glibc-2.39-1.1  gmp-6.3.0-1  gnupg-2.4.4-1  gnutls-3.8.3-1  gpgme-1.23.2-1  grep-3.11-1  gzip-1.13-2  hwdata-0.380-1  iana-etc-20231228-1  icu-74.2-1  iproute2-6.7.0-1  iptables-1:1.8.10-1  iputils-20240117-1  json-c-0.17-1  kbd-2.6.4-1  keyutils-1.6.3-2  kmod-31-1  krb5-1.21.2-2  libarchive-3.7.2-1  libassuan-2.5.6-1  libbpf-1.3.0-1  libcap-2.69-3  libcap-ng-0.8.4-1  libelf-0.191-1  libevent-2.1.12-4  libffi-3.4.6-1  libgcrypt-1.10.3-1  libgpg-error-1.48-1  libidn2-2.3.7-1  libksba-1.6.6-1  libldap-2.6.6-2  libmnl-1.0.5-1  libnetfilter_conntrack-1.0.9-1  libnfnetlink-1.0.2-1  libnftnl-1.2.6-1  libnghttp2-1.60.0-1  libnghttp3-1.2.0-1  libnl-3.9.0-1  libnsl-2.0.1-1  libp11-kit-0.25.3-1  libpcap-1.10.4-1  libpsl-0.21.2-1  libsasl-2.1.28-4  libseccomp-2.5.5-2  libsecret-0.21.4-1  libssh2-1.11.0-1  libsysprof-capture-45.2-1  libtasn1-4.19.0-1  libtirpc-1.3.4-1  libunistring-1.1-2  libusb-1.0.27-1  libutempter-1.2.1-4  libverto-0.3.2-4  libxcrypt-4.4.36-1  libxml2-2.12.5-1  licenses-20240206-1  linux-api-headers-6.7-1  lz4-1:1.9.4-2  manjaro-keyring-20230719-2  mpfr-4.2.1-2  ncurses-6.4_20230520-1  nettle-3.9.1-1  npth-1.7-1  openssl-3.2.1-1  p11-kit-0.25.3-1  pacman-6.0.2-18  pacman-mirrors-4.24.1-1  pam-1.6.0-4  pambase-20230918-1  pciutils-3.11.1-1  pcre2-10.42-2  pinentry-1.2.1-3  popt-1.19-1  procps-ng-4.0.4-2  psmisc-23.6-1  python-3.11.8-1  python-charset-normalizer-3.3.2-1  python-idna-3.6-1  python-npyscreen-4.10.5-8  python-requests-2.31.0-1  python-urllib3-1.26.18-1  readline-8.2.010-1  sed-4.9-3  shadow-4.14.6-1  sqlite-3.45.1-1  systemd-255.4-2  systemd-libs-255.4-2  systemd-sysvcompat-255.4-2  tar-1.35-2  tpm2-tss-4.0.1-1  tzdata-2024a-1  util-linux-2.39.3-2  util-linux-libs-2.39.3-2  xz-5.6.0-1  zlib-1:1.3.1-1  zstd-1.5.5-1  base-3-2

	Total Download Size:   148.30 MiB
	Total Installed Size:  596.00 MiB

	:: Proceed with installation? [Y/n]
	:: Retrieving packages...
	 gcc-libs-13.2.1-5-x86_64 downloading...
	 python-3.11.8-1-x86_64 downloading...
	 glibc-2.39-1.1-x86_64 downloading...
	 icu-74.2-1-x86_64 downloading...
	 systemd-255.4-2-x86_64 downloading...
	 openssl-3.2.1-1-x86_64 downloading...
	 glib2-2.78.4-1-x86_64 downloading...
	 coreutils-9.4-3-x86_64 downloading...
	 util-linux-2.39.3-2-x86_64 downloading...
	 gnutls-3.8.3-1-x86_64 downloading...
	 gnupg-2.4.4-1-x86_64 downloading...
	error: failed retrieving file 'gnupg-2.4.4-1-x86_64.pkg.tar.zst' from mirrors.manjaro.org : The requested URL returned error: 404
	warning: failed to retrieve some files
	error: failed to commit transaction (failed to retrieve some files)
	Errors occurred, no packages were upgraded.

support/linux.mk

@@ -1675,8 +1675,8 @@ stable-log: x86_64-archlinux-rootfs.log
 stable-log: i686-archlinux32-rootfs.log
 stable-log: x86_64-manjaro-stable-rootfs.log
 
-unstable-support: support/x86_64-manjaro-unstable-rootfs.txt
-unstable-log: x86_64-manjaro-unstable-rootfs.log
+broken-support: support/x86_64-manjaro-unstable-rootfs.txt
+broken-log: x86_64-manjaro-unstable-rootfs.log
 endif
 
 ifneq ($(shell command -v debootstrap 2>/dev/null),)