Use ARCH_ARM_HAVE_VFP instead of TARGET_ARCH_VARIANT

Change-Id: I5f6225803d13fba62626cbe5e78e4008b59da90a
diff --git a/Android.mksnapshot.mk b/Android.mksnapshot.mk
index b6c9e61..051a747 100644
--- a/Android.mksnapshot.mk
+++ b/Android.mksnapshot.mk
@@ -63,7 +63,7 @@
 endif
 
 ifeq ($(TARGET_CPU_ABI),armeabi-v7a)
-    ifeq ($(TARGET_ARCH_VARIANT),armv7-a)
+    ifeq ($(ARCH_ARM_HAVE_VFP),true)
         LOCAL_CFLAGS += -DCAN_USE_VFP_INSTRUCTIONS -DCAN_USE_ARMV7_INSTRUCTIONS
     endif
 endif