drm/i915: Apply the i915gm/i945gm irq C-state w/a to CRC interrupts

drm/i915: Apply the i915gm/i945gm irq C-state w/a to CRC interrupts

Turns out CRC interrupts also fail to wake up i915gm/i945gm from
C2+. I suppose this is a generic problem, but for most other
interrupts the system will be busy enough already prior to
the irq being issued. But CRC interrupts are like vblank interrupts
and only fire once per frame, so plenty of time to fall asleep
in between them.

Apply the same core clock gating trick to CRC interrupts
that we use for vblank interrupts.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241001195803.3371-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>