configs/stm32mp157c_odyssey_defconfig: use a fixed TF-A version

Commit f20589cbc7a (configs/stm32mp157c_odyssey: new defconfig) forgot to
specify a fixed TF-A version, so do that now.

When the defconfig was added, the default version was v2.5 - So use that.
Similarly to the other stm32mp1 defconfigs, this needs disabling -Werror
with E=0 to fix a build issue with GCC >= 12.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 69ac9fdbc46f28dbc6f013200e5cf13dd6f0c2aa)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/stm32mp157c_odyssey_defconfig

@@ -17,8 +17,10 @@ BR2_TARGET_ROOTFS_EXT2=y
 BR2_TARGET_ROOTFS_EXT2_4=y
 # BR2_TARGET_ROOTFS_TAR is not set
 BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION=y
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="v2.5"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="stm32mp1"
-BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES="STM32MP_SDMMC=1 AARCH32_SP=sp_min DTB_FILE_NAME=stm32mp157c-odyssey.dtb"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_ADDITIONAL_VARIABLES="STM32MP_SDMMC=1 AARCH32_SP=sp_min DTB_FILE_NAME=stm32mp157c-odyssey.dtb E=0"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_IMAGES="*.stm32"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_NEEDS_DTC=y
 BR2_TARGET_UBOOT=y