configs/ti_am64x_sk_defconfig: update TFA to v2.10

Update the TFA firmware to the latest LTS tag for v2.10 release of
arm-trusted-firmware

Signed-off-by: Bryan Brattlof <bb@ti.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

board/ti/am64x-sk/patches/arm-trusted-firmware/arm-trusted-firmware.hash

@@ -1,2 +1,2 @@
 # Locally computed:
-sha256  327c65b1bc231608a7a808b068b00c1a22310e9fc86158813cd10a9711d5725e  arm-trusted-firmware-v2.7.tar.gz
+sha256  ba215404fe9db26e5f2cef3fdce17b7c8ed344a2a1d592dd01a5f1c5e72cfdbd  arm-trusted-firmware-lts-v2.10.4.tar.gz

configs/ti_am64x_sk_defconfig

@@ -19,7 +19,7 @@ BR2_TARGET_ROOTFS_EXT2_4=y
 BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION=y
-BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="v2.7"
+BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="lts-v2.10.4"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="k3"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_TARGET_BOARD="lite"
 BR2_TARGET_ARM_TRUSTED_FIRMWARE_BL32_OPTEE=y