arm_acle: Add mappings for dbg intrinsic

This completes all ACLE hint intrinsics.

llvm-svn: 216453
diff --git a/clang/lib/Headers/arm_acle.h b/clang/lib/Headers/arm_acle.h
index cc7171b..f7c71a6 100644
--- a/clang/lib/Headers/arm_acle.h
+++ b/clang/lib/Headers/arm_acle.h
@@ -66,6 +66,10 @@
 }
 #endif
 
+#if __ARM_32BIT_STATE
+#define __dbg(t) __builtin_arm_dbg(t)
+#endif
+
 /* 8.5 Swap */
 static __inline__ uint32_t __attribute__((always_inline, nodebug))
   __swp(uint32_t x, volatile uint32_t *p) {