ART: Disable Clang for arm

Disable Clang for arm32 until a fix for the issue is found.

Bug: 25130937
Change-Id: Ia33f387b89ac8d1e8eac9a2782c45f038b9e8a1a
diff --git a/build/Android.common_build.mk b/build/Android.common_build.mk
index b3d246c..cd9d18d 100644
--- a/build/Android.common_build.mk
+++ b/build/Android.common_build.mk
@@ -114,7 +114,8 @@
 else
 ART_TARGET_CLANG := false
 endif
-ART_TARGET_CLANG_arm :=
+# b/25130937
+ART_TARGET_CLANG_arm := false
 ART_TARGET_CLANG_arm64 :=
 ART_TARGET_CLANG_mips :=
 ART_TARGET_CLANG_mips64 :=