drm/i915/dp: Use crtc_state->enhanced_framing properly on ivb/hsw CPU eDP

Looks like I missed the drm_dp_enhanced_frame_cap() in the ivb/hsw CPU
eDP code when I introduced crtc_state->enhanced_framing. Fix it up so
that the state we program to the hardware is guaranteed to match what
we computed earlier.

Cc: stable@vger.kernel.org
Fixes: 3072a24 ("drm/i915: Introduce crtc_state->enhanced_framing")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20260325135849.12603-3-ville.syrjala@linux.intel.com
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
(cherry picked from commit 799fe8dc2af52f35c78c4ac97f8e34994dfd8760)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Author: vsyrjala

drivers/gpu/drm/i915/display/g4x_dp.c

@@ -137,7 +137,7 @@ static void intel_dp_prepare(struct intel_encoder *encoder,
 			intel_dp->DP |= DP_SYNC_VS_HIGH;
 		intel_dp->DP |= DP_LINK_TRAIN_OFF_CPT;
 
-		if (drm_dp_enhanced_frame_cap(intel_dp->dpcd))
+		if (pipe_config->enhanced_framing)
 			intel_dp->DP |= DP_ENHANCED_FRAMING;
 
 		intel_dp->DP |= DP_PIPE_SEL_IVB(crtc->pipe);