i965: Skip the register write check on Broadwell.

MI_STORE_REGISTER_MEM has to take a 48-bit address, so the existing code
doesn't work.  But supposedly Broadwell has a register whitelist and
just works out of the box anyway, so there's no need to check.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
1 file changed