freedreno: update generated headers

Signed-off-by: Rob Clark <robclark@freedesktop.org>
freedreno/a3xx: add sRBG texture support

That was easy.  Turns out it is just a matter of setting one bit.
Enable sampling from sRGB texture, and therefore enable GL 2.1 :-)

Signed-off-by: Rob Clark <robclark@freedesktop.org>