Update SVN for AT&T FFW Build for PTCRB
Bug:140074963
(cherry picked from commit 4449feff751f016693a3488d52452cd6acf4a330)

Change-Id: Ia9af953d096deaaea50788eec3c6f1d310a7d790
diff --git a/device.mk b/device.mk
index 115e43d..83d81ac 100644
--- a/device.mk
+++ b/device.mk
@@ -933,7 +933,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_PROPERTY_OVERRIDES += \
-	ro.vendor.build.svn=1
+	ro.vendor.build.svn=2
 
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/powerhint.json:$(TARGET_COPY_OUT_VENDOR)/etc/powerhint.json