x86: Enable -fstack-protector

Change-Id: Ib69514c3afcb4c1f5e5f3f8cd91acfd145a0866c
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
diff --git a/libc/Android.mk b/libc/Android.mk
index 2e7cd5a..033c273 100644
--- a/libc/Android.mk
+++ b/libc/Android.mk
@@ -553,7 +553,7 @@
 GEN := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_so.o
 $(GEN): $(LOCAL_PATH)/arch-$(TARGET_ARCH)/bionic/crtbegin_so.S
 	@mkdir -p $(dir $@)
-	$(TARGET_CC) $(libc_crt_target_cflags) -o $@ -c $<
+	$(TARGET_CC) $(libc_crt_target_cflags) -fPIC -o $@ -c $<
 ALL_GENERATED_SOURCES += $(GEN)
 
 GEN := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_so.o