i965: Fix missing dirty bits in the gen8_sbe_state atom.

i965: Fix missing dirty bits in the gen8_sbe_state atom.

These are clearly needed---the comments in the function are even present
for each one of them.   I originally had two separate state atoms for
3DSTATE_SBE and 3DSTATE_SBE_SWIZ.  When I combined the functions, I must
have forgotten to add the atoms for 3DSTATE_SBE_SWIZ.

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