arm-trusted-firmware-mvebu: Add hash for aarch64 cm3-gcc

This adds the hash also for the aarch64 toolchain in addition to the
x86_64 toolchain. This gets the build on a Linux aarch64 host one step
further.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

package/boot/arm-trusted-firmware-mvebu/Makefile

@@ -166,7 +166,11 @@ CM3_GCC_SOURCE=$(CM3_GCC_NAME)-$(CM3_GCC_RELEASE)-$(CM3_GCC_VERSION).tar.xz
 define Download/cm3-gcc
   FILE:=$(CM3_GCC_SOURCE)
   URL:=https://developer.arm.com/-/media/Files/downloads/gnu-a/$(CM3_GCC_RELEASE)/binrel
+ifeq ($(HOST_ARCH),aarch64)
+  HASH:=1a42eecafa03dc6f32b8ae49ffcd15114dc818efbd72292fa6bab58233940bb9
+else
   HASH:=bf7ee185936d22d787b80c8da573f72ead5675695331fb8b590f0133ef1f6bb9
+endif
 endef
 
 define Build/Clean