valgrind: Add support for ARM64 architecture

valgrind also works on the ARM64 architecture, build it also for such CPUs.

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

package/devel/valgrind/Makefile

@@ -31,7 +31,7 @@ include $(INCLUDE_DIR)/kernel.mk
 define Package/valgrind
   SECTION:=devel
   CATEGORY:=Development
-  DEPENDS:=@mips||mipsel||i386||x86_64||powerpc||arm_v7 +libpthread +librt
+  DEPENDS:=@mips||mipsel||i386||x86_64||powerpc||arm_v7||aarch64 +libpthread +librt
   TITLE:=debugging and profiling tools for Linux
   URL:=http://www.valgrind.org
 endef