i965: Disallow fast blit paths for CopyTexImage with PixelTransfer ops

i965: Disallow fast blit paths for CopyTexImage with PixelTransfer ops

glCopyTexImage behaves similarly to glReadPixels with respect to the
pixel transfer operations. Therefore if any are set we cannot use the
simple blit-only fast paths.

(Though if would be possible to relax the blorp path to handle
pixel zoom, or we can just enhance meta.)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jason Ekstrand <jason.ekstrand@intel.com>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Reviwewed-by: Iago Toral <itoral@igalia.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: mesa-stable@lists.freedesktop.org