Use linker64 on AArch64

Patch Set 3: Combine into one sed - by bigbiff

Change-Id: Ice3147fae76575f6e09c7df201bcd3f949aa24ea
diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index 58f3d4c..c69e07c 100644
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -30,6 +30,9 @@
 RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/mke2fs
 RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/tune2fs
 RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/linker
+ifeq ($(TARGET_ARCH), arm64)
+    RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/linker64
+endif
 #RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/twrpmtp
 RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libc.so
 RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libcutils.so