CDD:  Relax GL_OVR_multiview_multisampled_render_to_texture requirement.

Moving GL_OVR_multiview_multisampled_render_to_texture from MUST to SR as it
is only of use to tiled hardware architectures.

Bug: 183610095
Change-Id: I6d9c82e545f6130aa147402951db5f5659d9f29b
1 file changed