Update libgstreamer-gl.symbols

Add new API gst_gl_window_prefer_fullscreen

BUG: 142900877

Change-Id: I45aac1064f3e121bf82f56e6957871bad7b47b90

debian/libgstreamer-gl.symbols

diff --git a/debian/libgstreamer-gl.symbols b/debian/libgstreamer-gl.symbols
index 086cfa9..b7ad400 100644
--- a/debian/libgstreamer-gl.symbols
+++ b/debian/libgstreamer-gl.symbols
@@ -327,3 +327,4 @@
  gst_is_gl_memory_egl@Base 1.14.0
  gst_is_gl_memory_pbo@Base 1.14.0
  gst_is_gl_renderbuffer@Base 1.14.0
+ gst_gl_window_prefer_fullscreen@Base 1.14.4+imx-4