openmax: add OMX_IndexConfigPriority.

Bug: 19620911
Change-Id: I776c1537e5fd88052609cab66d60905f7e30400a
diff --git a/include/media/openmax/OMX_IndexExt.h b/include/media/openmax/OMX_IndexExt.h
index ea3d0da..0122a27 100644
--- a/include/media/openmax/OMX_IndexExt.h
+++ b/include/media/openmax/OMX_IndexExt.h
@@ -83,6 +83,7 @@
     /* Other configurations */
     OMX_IndexExtOtherStartUnused = OMX_IndexKhronosExtensions + 0x00800000,
     OMX_IndexConfigAutoFramerateConversion,         /**< reference: OMX_CONFIG_BOOLEANTYPE */
+    OMX_IndexConfigPriority,                        /**< reference: OMX_PARAM_U32TYPE */
 
     /* Time configurations */
     OMX_IndexExtTimeStartUnused = OMX_IndexKhronosExtensions + 0x00900000,