Workaround a sepolicy compiler bug.

When combining property_contexts from multiple sources, the last line
 of the first file and the first line of the second file will be merged
 to one line and leads to compile error.

Test: builds successfully
Change-Id: I11c180dcfaf681636578a32d5dbbc09a5d0b6ea0
diff --git a/car_product/sepolicy/property_contexts b/car_product/sepolicy/property_contexts
index 67b90f6..f27be18 100644
--- a/car_product/sepolicy/property_contexts
+++ b/car_product/sepolicy/property_contexts
@@ -2,4 +2,5 @@
 wlan.driver.               u:object_r:wlan_driver_prop:s0
 
 boot.car_service_created u:object_r:car_prop:s0
-ro.opengles.            u:object_r:opengles_prop:s0
\ No newline at end of file
+ro.opengles.            u:object_r:opengles_prop:s0
+