drm/xe/bmg: Update Wa_16023588340

This allows for additional L2 caching modes.

Fixes: 01570b4 ("drm/xe/bmg: implement Wa_16023588340")
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Link: https://lore.kernel.org/r/20250612-wa-14022085890-v4-2-94ba5dcc1e30@intel.com
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
(cherry picked from commit 6ab42fa)
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>

Author: vsbelgaum

drivers/gpu/drm/xe/xe_gt.c

@@ -118,7 +118,7 @@ static void xe_gt_enable_host_l2_vram(struct xe_gt *gt)
 		xe_gt_mcr_multicast_write(gt, XE2_GAMREQSTRM_CTRL, reg);
 	}
 
-	xe_gt_mcr_multicast_write(gt, XEHPC_L3CLOS_MASK(3), 0x3);
+	xe_gt_mcr_multicast_write(gt, XEHPC_L3CLOS_MASK(3), 0xF);
 	xe_force_wake_put(gt_to_fw(gt), fw_ref);
 }