Set default to Clang integrated assembler.

BUG: 17820427
Change-Id: I10a6ddd94aad083665164d7939990e148b3b6efb
diff --git a/core/clang/arm.mk b/core/clang/arm.mk
index f979409..ca66986 100644
--- a/core/clang/arm.mk
+++ b/core/clang/arm.mk
@@ -1,16 +1,12 @@
 # Clang flags for arm arch, target or host.
 
-CLANG_CONFIG_arm_EXTRA_ASFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_ASFLAGS :=
 
-CLANG_CONFIG_arm_EXTRA_CFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_CFLAGS :=
 
-CLANG_CONFIG_arm_EXTRA_CPPFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_CPPFLAGS :=
 
-CLANG_CONFIG_arm_EXTRA_LDFLAGS := \
-  -no-integrated-as
+CLANG_CONFIG_arm_EXTRA_LDFLAGS :=
 
 # Include common unknown flags
 CLANG_CONFIG_arm_UNKNOWN_CFLAGS := \