Add TARGET_FDO_LDFLAGS to make sure -lgcc is always linked after -lgcov.

Change-Id: I33a94abe58391a8564ada14417b0158ddd7ed2d6
diff --git a/core/binary.mk b/core/binary.mk
index 5da0c72..8ab63e4 100644
--- a/core/binary.mk
+++ b/core/binary.mk
@@ -190,7 +190,7 @@
 ifeq ($(strip $(LOCAL_FDO_SUPPORT)), true)
   ifeq ($(strip $(LOCAL_IS_HOST_MODULE)),)
     my_cflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_CFLAGS)
-    my_ldflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_CFLAGS)
+    my_ldflags += $($(LOCAL_2ND_ARCH_VAR_PREFIX)TARGET_FDO_LDFLAGS)
   endif
 endif