MT#55283 use gcc for .S files

Change-Id: I67375e10356c131fc49d01f74a0aa9c93adf9ae5

lib/common.Makefile

@@ -30,7 +30,7 @@ $(DAEMONOBJS): %.o: ../daemon/%.c
 	$(CC) -c $(CFLAGS) $< -o $@
 
 $(LIBASMOBJS): %.o: ../lib/%.S
-	$(AS) -c $(ASFLAGS) $< -o $@
+	$(CC) -c $(ASFLAGS) $< -o $@
 
 
 $(TARGET):	$(ALLOBJS) Makefile

lib/lib.Makefile

@@ -1,5 +1,4 @@
 CC ?= gcc
-AS ?= gcc
 
 ifeq ($(DO_ASAN_FLAGS),1)
 ASAN_FLAGS = -ggdb -O0 -fsanitize=address -fsanitize=leak -fsanitize=undefined