stagefright: define mpeg2 HighP level constant

Bug: 28671284
Change-Id: Ic97fd9c3cb4ce04f9cfcd18a4daf68db3349694b
diff --git a/include/media/openmax/OMX_Video.h b/include/media/openmax/OMX_Video.h
index acdb7e8..76efac9 100644
--- a/include/media/openmax/OMX_Video.h
+++ b/include/media/openmax/OMX_Video.h
@@ -553,6 +553,7 @@
     OMX_VIDEO_MPEG2LevelML,      /**< Main Level */
     OMX_VIDEO_MPEG2LevelH14,     /**< High 1440 */
     OMX_VIDEO_MPEG2LevelHL,      /**< High Level */
+    OMX_VIDEO_MPEG2LevelHP,      /**< HighP Level */
     OMX_VIDEO_MPEG2LevelKhronosExtensions = 0x6F000000, /**< Reserved region for introducing Khronos Standard Extensions */
     OMX_VIDEO_MPEG2LevelVendorStartUnused = 0x7F000000, /**< Reserved region for introducing Vendor Extensions */
     OMX_VIDEO_MPEG2LevelMax = 0x7FFFFFFF