Fix OP-TEE build on older toolchains (Ubuntu Jammy)

Check if linker supports --no-warn-rwx-segments flag before using it.
Older binutils versions in ubuntu:jammy don't recognize this flag.

config/sources/families/nuvoton-ma35d1.conf

@@ -115,6 +115,13 @@ function uboot_custom_postprocess() {
 
 		local cross_compile="aarch64-linux-gnu-"
 
+		# Check if linker supports --no-warn-rwx-segments (binutils 2.39+)
+		# Workaround for ubuntu:jammy older toolchain
+		local ldflags=""
+		if ${cross_compile}ld --help 2>&1 | grep -q "no-warn-rwx-segments"; then
+			ldflags="--no-warn-rwx-segments"
+		fi
+
 		run_host_command_logged make -C "${optee_src_dir}" clean PLATFORM=nuvoton-MA35D1 2>/dev/null || true
 
 		display_alert "Building OP-TEE" "PLATFORM=nuvoton-MA35D1" "info"
@@ -124,7 +131,7 @@ function uboot_custom_postprocess() {
 			PLATFORM=nuvoton-MA35D1 \
 			CFG_ARM64_core=y \
 			CFG_TEE_CORE_LOG_LEVEL=1 \
-			LDFLAGS="--no-warn-rwx-segments" \
+			LDFLAGS="${ldflags}" \
 			NOWERROR=1 \
 			-j$(nproc)