meta-nuvoton: update TFA recipe to fix build break

Due to the default trusted-firmware-a version move to 2.9.0, rename
bbappend version and move SRCREV which merged 2.9.0.

Change-Id: I960b93967e353e129eaae474f52bd43ebc917589
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_2.9.%.bbappend
similarity index 77%
rename from meta-nuvoton/dynamic-layers/arm-layer/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.8.%.bbappend
rename to meta-nuvoton/dynamic-layers/arm-layer/recipes-bsp/trusted-firmware-a/trusted-firmware-a_2.9.%.bbappend
index cb00503..1a9cc3c 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_2.9.%.bbappend
@@ -1,4 +1,4 @@
 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"
+SRCREV_tfa = "31a3b9f7d0d6a0dda99bfcff15a5022810540539"