drm/i915/icl: Disable video turbo mode for rp control

There is no video turbo mode for gen11, so don't set it.

v2: inline (Chris)
v3: brackets (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410132436.23679-1-mika.kuoppala@linux.intel.com