drm/i915/crt: s/pipe_config/crtc_state/

Call the crtc state 'crtc_state' rather than 'pipe_config',
as is the modern style.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241107161123.16269-8-ville.syrjala@linux.intel.com


Reviewed-by: Jani Nikula <jani.nikula@intel.com>