Allow bcc to provide arm64 codegen

Bug: 138266211
Test: mm
Test: 64bit RS app compiles well with 32bit bcc
Change-Id: Iaa3fd3aebecb801f1992b31f8fdfbd2055857a82
diff --git a/Android.bp b/Android.bp
index 8761b29..28f1b8a 100644
--- a/Android.bp
+++ b/Android.bp
@@ -69,6 +69,7 @@
             cflags: [
                 "-DFORCE_ARM_CODEGEN",
                 "-DARCH_ARM_HAVE_VFP",
+                "-DPROVIDE_ARM64_CODEGEN",
             ],
             neon: {
                 cflags: [