i965/compiler: Disable trig workarounds on KBL+

The precision of our trig instructions appears to have been fixed on Kaby
Lake.  Neither Ben nor I can find any documentation for this.  However, the
dEQP precision tests now pass with INTEL_PRECISE_TRIG=0 where they fail on
Sky Lake.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2 files changed