drm/dp: Add definition for Panel Replay full-line granularity

DP specification is saying value 0xff 0xff in PANEL REPLAY SELECTIVE UPDATE
X GRANULARITY CAPABILITY registers (0xb2 and 0xb3) means full-line
granularity. Add definition for this.

Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patch.msgid.link/20260225074221.1744330-1-jouni.hogander@intel.com
(cherry picked from commit b933116)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Author: hogander

include/drm/display/drm_dp.h

@@ -571,6 +571,8 @@
 # define DP_PANEL_REPLAY_LINK_OFF_SUPPORTED_IN_PR_AFTER_ADAPTIVE_SYNC_SDP	(1 << 7)
 
 #define DP_PANEL_REPLAY_CAP_X_GRANULARITY		0xb2
+# define DP_PANEL_REPLAY_FULL_LINE_GRANULARITY		0xffff
+
 #define DP_PANEL_REPLAY_CAP_Y_GRANULARITY		0xb4
 
 /* Link Configuration */