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
 
diff --git a/core/combo/fdo.mk b/core/combo/fdo.mk
index a05af6d..9e331b6 100644
--- a/core/combo/fdo.mk
+++ b/core/combo/fdo.mk
@@ -22,6 +22,7 @@
   # Set BUILD_FDO_INSTRUMENT=true to turn on FDO instrumentation.
   # The profile will be generated on /sdcard/fdo_profile on the device.
   $(combo_2nd_arch_prefix)TARGET_FDO_CFLAGS := -fprofile-generate=/sdcard/fdo_profile -DANDROID_FDO
+  $(combo_2nd_arch_prefix)TARGET_FDO_LDFLAGS := -lgcov -lgcc
 else
   ifeq ($(strip $(BUILD_FDO_OPTIMIZE)), true)
     # Set TARGET_FDO_PROFILE_PATH to set a custom profile directory for your build.