Fix 'wayland-egl-symbols-check' on mips64el-linux, where an additional symbol
(_ftext) is present in libwayland-egl.so.

Patch by Mark H Weaver <mhw@netris.org>

--- mesa-12.0.1/src/egl/wayland/wayland-egl/wayland-egl-symbols-check.orig	2016-01-18 02:39:25.000000000 -0500
+++ mesa-12.0.1/src/egl/wayland/wayland-egl/wayland-egl-symbols-check	2016-10-24 16:25:07.110721426 -0400
@@ -7,6 +7,7 @@
 wl_egl_window_destroy
 wl_egl_window_get_attached_size
 _fini
+_ftext
 _init
 EOF
 done)