drm/i915/gt: Fix perf limit reasons bit positions

commit d654f608 upstream.

Perf limit reasons bit positions were off by one.

Fixes: fa68bff7 ("drm/i915/gt: Add sysfs throttle frequency interfaces")
Cc: stable@vger.kernel.org # v5.18+
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Acked-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Sujaritha Sundaresan <sujaritha.sundaresan@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220908155821.1662110-1-ashutosh.dixit@intel.com


Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit 60017f34)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>