Update Coral SVN to 7

Bug:141272605
Change-Id: If488ab2abd8d6be9864893814c50d1d2dc1df507
(cherry picked from commit a510a12c0995fd58945305693f8e0aa350c37565)
diff --git a/device.mk b/device.mk
index 4614907..fa39eeb 100644
--- a/device.mk
+++ b/device.mk
@@ -939,7 +939,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_PROPERTY_OVERRIDES += \
-	ro.vendor.build.svn=6
+	ro.vendor.build.svn=7
 
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/powerhint.json:$(TARGET_COPY_OUT_VENDOR)/etc/powerhint.json