Update for copying in WiFi firmware files

Change-Id: I0f5a3d3ae4c53591bbe17bcc74884d9f9f380fcc
diff --git a/device.mk b/device.mk
index e547b1e..64edbbb 100644
--- a/device.mk
+++ b/device.mk
@@ -71,3 +71,4 @@
 $(call inherit-product, frameworks/base/build/tablet-dalvik-heap.mk)
 $(call inherit-product, hardware/ti/omap4xxx/omap4.mk)
 $(call inherit-product-if-exists, vendor/ti/proprietary/omap4/ti-omap4-vendor.mk)
+$(call inherit-product-if-exists, vendor/ti/proprietary/wl12xx/ti-wl12xx-vendor.mk)