temp/arm-trusted-firmware: fix build on gcc 12 (MR 3681)

Apply the same fix as in Alpine:
https://gitlab.alpinelinux.org/alpine/aports/-/commit/769f9666b663ba06dca63ddbff6eb1af458355f3

[ci:skip-build]: already built successfully in CI

temp/arm-trusted-firmware/APKBUILD

@@ -4,7 +4,7 @@
 pkgname=arm-trusted-firmware
 pkgver=9999
 _pkgver=2.7.0
-pkgrel=7
+pkgrel=8
 pkgdesc="ARM Trusted Firmware-A (TF-A)"
 url="https://github.com/ARM-software/arm-trusted-firmware"
 arch="aarch64"
@@ -33,7 +33,7 @@ build() {
 		esac
 
 		msg "Building ATF for $plat (opts='$opts')"
-		make PLAT=$plat bl31 $opts
+		LDFLAGS="$LDFLAGS -no-warn-rwx-segment" make E=0 PLAT=$plat bl31 $opts
 	done
 }