[MIPS64] linker64 requires startup code

Change-Id: Iff2cd7d4dc40a67978bd9fc585b86e5a87afdbdd
diff --git a/linker/Android.mk b/linker/Android.mk
index 811cf6e..68e801d 100644
--- a/linker/Android.mk
+++ b/linker/Android.mk
@@ -16,6 +16,7 @@
 LOCAL_SRC_FILES_x86     := arch/x86/begin.c
 LOCAL_SRC_FILES_x86_64  := arch/x86_64/begin.S
 LOCAL_SRC_FILES_mips    := arch/mips/begin.S
+LOCAL_SRC_FILES_mips64  := arch/mips64/begin.S
 
 LOCAL_LDFLAGS := \
     -shared \