plat-stm32mp1: fix warning trace on TZC configuration check

Fix build warning reported by recent toolchains when TZDRAM
memory ends at the UINT32_MAX. This happends for example when
building for the stm32mp1-157C_EV1 platform. In such case was GCC
to emit the following warning trace:

core/arch/arm/plat-stm32mp1/plat_tzc400.c: In function ‘init_stm32mp1_tzc’:
core/arch/arm/plat-stm32mp1/plat_tzc400.c:107:61: warning: conversion from ‘uint64_t’ {aka ‘long long unsigned int’} to ‘vaddr_t’ {aka ‘long unsigned int’} changes value from ‘4294967296’ to ‘0’ [-Woverflow]
  107 |                 if (!tzc_region_is_non_secure(region_index, tzdram_end,
      |                                                             ^~~~~~~~~~

Fixes: 59c253f ("plat-stm32mp1: check TZC400 configuration")
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

core/arch/arm/plat-stm32mp1/plat_tzc400.c

@@ -40,11 +40,12 @@ static struct itr_handler tzc_itr_handler = {
 };
 DECLARE_KEEP_PAGER(tzc_itr_handler);
 
-static bool tzc_region_is_non_secure(unsigned int i, vaddr_t base, size_t size)
+static bool tzc_region_is_non_secure(unsigned int i, uint64_t pa, size_t size)
 {
 	struct tzc_region_config region_cfg = { };
 	uint32_t ns_cpu_mask = TZC_REGION_ACCESS_RDWR(STM32MP1_TZC_A7_ID);
 	uint32_t filters_mask = TZC_FILTERS_MASK;
+	vaddr_t base = pa;
 
 	if (tzc_get_region_config(i, &region_cfg))
 		panic();