Update Coral SVN to 18
Bug:149240442
diff --git a/device.mk b/device.mk
index 9a1e689..08f3baf 100644
--- a/device.mk
+++ b/device.mk
@@ -944,7 +944,7 @@
 
 # Increment the SVN for any official public releases
 PRODUCT_PROPERTY_OVERRIDES += \
-	ro.vendor.build.svn=17
+	ro.vendor.build.svn=18
 
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/powerhint.json:$(TARGET_COPY_OUT_VENDOR)/etc/powerhint.json