Use PRODUCT_PLATFORM as filter variable

Change-Id: I55dd8aaacde8cdcf95fa51c2845407f54bd64d2a
diff --git a/os_pickup.mk b/os_pickup.mk
index 939936e..7c4946e 100644
--- a/os_pickup.mk
+++ b/os_pickup.mk
@@ -1,4 +1,4 @@
-ifeq ($(TARGET_BOARD_PLATFORM),msmnile)
+ifeq ($(PRODUCT_PLATFORM),sm8150)
 LOCAL_PATH := $(call my-dir)
 include $(call first-makefiles-under,$(LOCAL_PATH))
 endif