intel: Create a miptree using offsets in intel_set_texture_image_region

intel: Create a miptree using offsets in intel_set_texture_image_region

When binding a region to a texture image, re-create the miptree base-level
considering the offset and dimension information exported by DRIImage.

v8: - Move the alignment surface address checks from the image-from-texture
      code to the texture-from-image side. This allows the error reporting to conform to
      OES_EGL_Image and to prevent mixing up EGL and GL errors. Reported by Chad Versace.
    - Addressed an existing issue in renderbuffer case where there is a
      a possibility of creating EGL images out of depthstencil textures which isn't
      really possible. This was spotted by Eric earlier.

Reviewed-by: Eric Anholt <eric@anholt.net> (v6)
Reviewed-by: Chad Versace <chad.versace@linux.intel.com> (v8)
Signed-off-by: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>