configs/ti_am64x_sk_defconfig: explicitly set the ti-k3-r5-loader version

Commit 6b2329bb80 ("configs/ti_am64x_sk: new defconfig") forgot to
specify the ti-k3-r5-loader, so do that now.

When the defconfig was added, the default version was 2022.10, so use it.

Suggested-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

configs/ti_am64x_sk_defconfig

@@ -25,6 +25,8 @@ BR2_TARGET_OPTEE_OS_PLATFORM="k3-am64x"
 BR2_TARGET_TI_K3_IMAGE_GEN=y
 BR2_TARGET_TI_K3_IMAGE_GEN_SOC_AM64X=y
 BR2_TARGET_TI_K3_R5_LOADER=y
+BR2_TARGET_TI_K3_R5_LOADER_CUSTOM_VERSION=y
+BR2_TARGET_TI_K3_R5_LOADER_CUSTOM_VERSION_VALUE="2022.10"
 BR2_TARGET_TI_K3_R5_LOADER_BOARD_DEFCONFIG="am64x_evm_r5"
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y