Rename all properties to UpperCamelCase

Upstream dbus standard is UpperCamelCase, start matching and
check in json schema to start failing builds that don't match.

Change-Id: I2d2c6fec5a5a0b07c88c843257fa7c88d420c4e5
Signed-off-by: James Feist <james.feist@linux.intel.com>
diff --git a/overlay_templates/Symbol.template b/overlay_templates/Symbol.template
index 7d430b2..f6ec38d 100644
--- a/overlay_templates/Symbol.template
+++ b/overlay_templates/Symbol.template
@@ -1,11 +1,11 @@
 /dts-v1/;
 /plugin/;
 / {
-    compatible = "$platform";
+    compatible = "$Platform";
     fragment@0{
         target-path = "/__symbols__";
         __overlay__{
-           i2c$bus = "$path";
+           i2c$Bus = "$Path";
         };
     };
 };
\ No newline at end of file