ndk: egl: Add EGL_KHR_mutable_render_buffer

platform CL: ag/929283

Change-Id: Ied3a0b50538a60ed8a37887ad6bfddecd60d8161
diff --git a/ndk/platforms/android-24/include/EGL/eglext.h b/ndk/platforms/android-24/include/EGL/eglext.h
index 68235cf..072bb3e 100644
--- a/ndk/platforms/android-24/include/EGL/eglext.h
+++ b/ndk/platforms/android-24/include/EGL/eglext.h
@@ -616,6 +616,10 @@
 #define EGL_FRONT_BUFFER_AUTO_REFRESH_ANDROID 0x314C
 #endif
 
+#ifndef EGL_KHR_mutable_render_buffer
+#define EGL_KHR_mutable_render_buffer 1
+#define EGL_MUTABLE_RENDER_BUFFER_BIT_KHR 0x1000
+#endif
 
 #ifdef __cplusplus
 }