drm/i915/fb: Don't report MC CCS plane capability on GEN<12

Remove the MC CCS plane capability on GEN<12, since it's not present
there. This didn't cause a problem, since the display version check
filtered out the MC CCS modifiers before GEN12.

Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211026161517.2694067-2-imre.deak@intel.com

drivers/gpu/drm/i915/display/skl_universal_plane.c

@@ -2001,6 +2001,9 @@ static bool skl_plane_has_rc_ccs(struct drm_i915_private *i915,
 static bool gen12_plane_has_mc_ccs(struct drm_i915_private *i915,
 				   enum plane_id plane_id)
 {
+	if (DISPLAY_VER(i915) < 12)
+		return false;
+
 	/* Wa_14010477008:tgl[a0..c0],rkl[all],dg1[all] */
 	if (IS_DG1(i915) || IS_ROCKETLAKE(i915) ||
 	    IS_TGL_DISPLAY_STEP(i915, STEP_A0, STEP_D0))