Enable 64-bit building for libRScpp_static.

bug 17666041

Change-Id: I964ef9ee11826fb748fc0419d66eb5a9a670580e
diff --git a/cpp/Android.mk b/cpp/Android.mk
index a170a5e..a4e4c90 100644
--- a/cpp/Android.mk
+++ b/cpp/Android.mk
@@ -49,7 +49,11 @@
 endif
 LOCAL_CFLAGS += $(local_cflags_for_rs_cpp)
 
+ifeq ($(my_32_64_bit_suffix),32)
 LOCAL_SDK_VERSION := 8
+else
+LOCAL_SDK_VERSION := 21
+endif
 LOCAL_CFLAGS += -DRS_COMPATIBILITY_LIB
 
 LOCAL_SRC_FILES := $(rs_cpp_SRC_FILES)