trusted-firmware-a: Only sign files for platforms that support it

We are seeing some testing issues where the new code that signs all of
the files at all times is causing issues.  So rollback the logic and
only sign for platforms that support it.

Signed-off-by: Ryan Eatmon <reatmon@ti.com>

meta-ti-bsp/recipes-bsp/trusted-firmware-a/trusted-firmware-a_%.bbappend

@@ -12,12 +12,48 @@ inherit ti-secdev
 EXTRA_OEMAKE:append:k3 = "${@ ' K3_USART=' + d.getVar('TFA_K3_USART') if d.getVar('TFA_K3_USART') else ''}"
 EXTRA_OEMAKE:append:k3 = "${@ ' K3_PM_SYSTEM_SUSPEND=' + d.getVar('TFA_K3_SYSTEM_SUSPEND') if d.getVar('TFA_K3_SYSTEM_SUSPEND') else ''}"
 
-# Signing procedure for K3 devices
-do_compile:append:k3() {
+# Signing procedure for K3 HS devices
+tfa_sign_k3hs() {
 	mv ${BUILD_DIR}/bl31.bin ${BUILD_DIR}/bl31.bin.unsigned
 	${TI_SECURE_DEV_PKG}/scripts/secure-binary-image.sh ${BUILD_DIR}/bl31.bin.unsigned ${BUILD_DIR}/bl31.bin
 }
 
+do_compile:append:am65xx-hs-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:am64xx-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:am62xx-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:am62xx-lp-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:am62axx-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:j721e-hs-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:j7200-hs-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:j721s2-hs-evm() {
+    tfa_sign_k3hs
+}
+
+do_compile:append:j784s4-hs-evm() {
+    tfa_sign_k3hs
+}
+
 do_install:append:k3() {
     if [ -f ${BUILD_DIR}/bl31.bin.unsigned ]; then
         echo "Install bl31.bin.unsigned"