util: add allow_glsl_builtin_const_expression to drirc for Google Earth VR

Reviewed-by: Dave Airlie <airlied@redhat.com>

src/util/drirc

@@ -176,6 +176,10 @@ TODO: document the other workarounds.
             <option name="allow_glsl_cross_stage_interpolation_mismatch" value="true"/>
         </application>
 
+        <application name="Google Earth VR" executable="Earth.exe">
+            <option name="allow_glsl_builtin_const_expression" value="true"/>
+        </application>
+
         <!-- The GL thread whitelist is below, workarounds are above.
              Keep it that way. -->