i965: Roll intel_reg.h into brw_defines.h

More than half of the stuff in intel_reg.h had nothing whatsoever to do
with registers and really belongs in brw_defines.h anyway.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
15 files changed