hwc: Add binder API to control partial update

Expose binder API to control partial update dynamically. Partial
update feature cannot co-exist with post processing features
dependent on histogram data. With this API, OEM's can set their
preferences on these features on use case basis.

Change-Id: Iee3eaa1593e057b1a0b7d35e642352f7f02c460f
diff --git a/libqservice/IQService.h b/libqservice/IQService.h
index 683c93c..a935131 100644
--- a/libqservice/IQService.h
+++ b/libqservice/IQService.h
@@ -55,8 +55,9 @@
         DYNAMIC_DEBUG = 15,     // Enable more logging on the fly
         SET_IDLE_TIMEOUT = 16,  // Set idle timeout for GPU fallback
         TOGGLE_BWC = 17,           // Toggle BWC On/Off on targets that support
+        SET_PARTIAL_UPDATE = 18,   // Preference on partial update feature
         /* Enable/Disable/Set refresh rate dynamically */
-        CONFIGURE_DYN_REFRESH_RATE = 18,
+        CONFIGURE_DYN_REFRESH_RATE = 19,
         COMMAND_LIST_END = 400,
     };