egl: Enable eglGetPlatformDisplay on Android Platform

This helps to add eglGetPlatformDisplay support on Android
Platform.
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>

src/egl/main/egldisplay.h

@@ -315,6 +315,12 @@ _eglGetSurfacelessDisplay(void *native_display,
                           const EGLAttrib *attrib_list);
 #endif
 
+#ifdef HAVE_ANDROID_PLATFORM
+_EGLDisplay*
+_eglGetAndroidDisplay(void *native_display,
+                         const EGLAttrib *attrib_list);
+#endif
+
 _EGLDisplay*
 _eglGetDeviceDisplay(void *native_display,
                      const EGLAttrib *attrib_list);