meta-nuvoton: update TFA source to fix build break

Sync the trusted-firmware-a source URI to fix build break.

Change-Id: I2c08e0cc2179c37e6b53729de3683c22bf6ccee0
Signed-off-by: Brian Ma <chma0@nuvoton.com>
diff --git a/meta-nuvoton/dynamic-layers/arm-layer/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.8.%.bbappend b/meta-nuvoton/dynamic-layers/arm-layer/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.8.%.bbappend
index a1071dd..cb00503 100644
--- a/meta-nuvoton/dynamic-layers/arm-layer/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.8.%.bbappend
+++ b/meta-nuvoton/dynamic-layers/arm-layer/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.8.%.bbappend
@@ -1,4 +1,4 @@
-SRC_URI:remove = "git://git.trustedfirmware.org/TF-A/trusted-firmware-a.git;protocol=https;name=tfa;branch=master"
+SRC_URI:remove = "${SRC_URI_TRUSTED_FIRMWARE_A};name=tfa;branch=${SRCBRANCH}"
 SRC_URI:append = "git://github.com/Nuvoton-Israel/arm-trusted-firmware.git;protocol=https;name=tfa;branch=nuvoton"
 SRCREV_tfa = "009fd73ba58ac744bf9168e425afa19357ea331d"