radeon: fix bgrx8/xrgb8 blits
Since d21320f6 the same txformat table entries are used for "normal" texturing as well as for blits. However, I forgot to put in an entry for the bgrx8 (le) and xrgb8 (be) formats - the normal texturing path can't hit them because the radeon tex format chooser will never chose them, but we get that format from the dri buffers (at least I assume we got it from there). This caused lots of piglit regressions (and probably lots of trouble outside piglit too). This fixes bug https://bugs.freedesktop.org/show_bug.cgi?id=92900 . Tested-by:Ian Romanick <ian.d.romanick@intel.com> Acked-by:
Alex Deucher <alexander.deucher@amd.com> Reviewed-by:
Marek Olšák <marek.olsak@amd.com> Cc: "11.0" <mesa-stable@lists.freedesktop.org> (cherry picked from commit 983614db)