i965: Fix barrier count shift in scalar TCS backend.
The "Barrier Count" field goes in 14:9 of m0.2. The vec4 backend
correctly shifts by 9, but the scalar backend only shifted by 8.
It's not like this changed - I think I just made a typo when writing
the original scalar TCS backend code.
Cc: mesa-stable@lists.freedesktop.org
Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Alejandro PiƱeiro <apinheiro@igalia.com>
(cherry picked from commit
d14dd727f4aded5bd34a78dc2c81374a78114440)