Now that the glTextureView() issues for eglimage-backed textures have
been discovered, we can switch back to using the right gbm formats for
externally allocated resources (this commit) and remove many of the
bgra-specific emulation (following commits).
Signed-off-by: Ryan Neph <ryanneph@google.com>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_requests/725>