evas/gl: Bind texture with external target for tbm

evas/gl: Bind texture with external target for tbm
 surface

egl images created using tbm surface for native surface set use
GL_TEXTURE_EXTERNAL_OES as texture target, so we should bind to
this target when rendering.
Dynamic hint set using tbm surface also creates egl images, but
as we only use RGB* colorspace for this we can use GL_TEXTURE_2D.
So, keep track of texture target in shader array, and bind to the
appropriate one.
This also fixes the bug that image_data_get only worked when BOTH
sec_image_map and sec_tbm_surface extensions are supported.

From 7db0e2066108c2ee78afd317727b581d1d7e8342 Mon Sep 17 00:00:00 2001
From: Dongyeon Kim <dy5.kim@samsung.com>

Change-Id: Iab9437f0119025d7b97223f8b12e723a2e336771