[evas-gl] enable dynamic_hint in wayland_egl

[evas-gl] enable dynamic_hint in wayland_egl

a feature called dynamic hint has been disabled in wayland.
so i enable this hint and fixed some crash.

1. Add flag in wayland_egl
: we need to check 'EGL_TIZEN_image_native_surface' in wayland
  currently only gl_x11 check it.

2. Change dyn.target GL_TEXTURE_EXTERNAL_OES to GL_TEXTURE_2D
: if this target is GL_TEXTURE_EXTERNAL_OES, TM1 only show black screen.
  i think  some driver can't use GL_TEXTURE_EXTERNAL_OES.
  upstream efl only use GL_TEXTURE_2D.

3. fixed crash in ector.
: fixed some crash when ector use dynamic hint.

Change-Id: If7f4b43d0e1634fb5ebdb9ca906c96b178ca283d