drm/i915/dpt: Only do the POT stride remap when using DPT

If we want to test with DPT disabled on ADL the POT stride remap
stuff needs to be disabled. Make it depend on actual DPT usage
instead of just assuming it based on the modifier.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320090522.9909-3-ville.syrjala@linux.intel.comReviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

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

@@ -1189,7 +1189,7 @@ bool intel_fb_needs_pot_stride_remap(const struct intel_framebuffer *fb)
 {
 	struct drm_i915_private *i915 = to_i915(fb->base.dev);
 
-	return IS_ALDERLAKE_P(i915) && fb->base.modifier != DRM_FORMAT_MOD_LINEAR;
+	return IS_ALDERLAKE_P(i915) && intel_fb_uses_dpt(&fb->base);
 }
 
 static int intel_fb_pitch(const struct intel_framebuffer *fb, int color_plane, unsigned int rotation)