Rework ck_ec tests when invoking FUTEX_WAIT_BITSET

Send FUTEX_BITSET_MATCH_ANY as the SYS_futex `val3` argument instead of
the deadline pointer, as deadline can be NULL which will result in the
futex call failing with EINVAL (val3 must have at least one bit set).

regressions/ck_ec/benchmark/ck_ec.c

@@ -121,7 +121,7 @@ static void wait32(const struct ck_ec_wait_state *state,
 	assert(state->ops == &test_ops);
 	syscall(SYS_futex, address,
 		FUTEX_WAIT_BITSET, expected, deadline,
-		NULL, deadline, 0);
+		NULL, FUTEX_BITSET_MATCH_ANY, 0);
 	return;
 }
 
@@ -143,7 +143,7 @@ static void wait64(const struct ck_ec_wait_state *state,
 
 	syscall(SYS_futex, low_half,
 		FUTEX_WAIT_BITSET, (uint32_t)expected, deadline,
-		NULL, deadline, 0);
+		NULL, FUTEX_BITSET_MATCH_ANY, 0);
 	return;
 }
 

regressions/ck_ec/validate/ck_ec_smoke_test.c

@@ -46,7 +46,7 @@ static void wait32(const struct ck_ec_wait_state *state,
 	assert(state->ops == &test_ops);
 	syscall(SYS_futex, address,
 		FUTEX_WAIT_BITSET, expected, deadline,
-		NULL, deadline, 0);
+		NULL, FUTEX_BITSET_MATCH_ANY, 0);
 	return;
 }
 
@@ -68,7 +68,7 @@ static void wait64(const struct ck_ec_wait_state *state,
 
 	syscall(SYS_futex, low_half,
 		FUTEX_WAIT_BITSET, (uint32_t)expected, deadline,
-		NULL, deadline, 0);
+		NULL, FUTEX_BITSET_MATCH_ANY, 0);
 	return;
 }