Have LOCAL_ASFLAGS honor debug/non-debug configuration.

With this change the NDEBUG macro can be used in assembly
files.

Change-Id: I640594a20d5654de62cd4116087040b565eef0ce
Test: ART host tests.
diff --git a/test/Android.libarttest.mk b/test/Android.libarttest.mk
index 01790ae..75e74ec 100644
--- a/test/Android.libarttest.mk
+++ b/test/Android.libarttest.mk
@@ -102,12 +102,14 @@
   else # host
     LOCAL_CLANG := $(ART_HOST_CLANG)
     LOCAL_CFLAGS := $(ART_HOST_CFLAGS)
+    LOCAL_ASFLAGS := $(ART_HOST_ASFLAGS)
     ifeq ($$(suffix),d)
       LOCAL_CFLAGS += $(ART_HOST_DEBUG_CFLAGS)
+      LOCAL_ASFLAGS += $(ART_HOST_DEBUG_ASFLAGS)
     else
       LOCAL_CFLAGS += $(ART_HOST_NON_DEBUG_CFLAGS)
+      LOCAL_ASFLAGS += $(ART_HOST_NON_DEBUG_ASFLAGS)
     endif
-    LOCAL_ASFLAGS := $(ART_HOST_ASFLAGS)
     LOCAL_LDLIBS := $(ART_HOST_LDLIBS) -ldl -lpthread
     LOCAL_IS_HOST_MODULE := true
     LOCAL_MULTILIB := both