i915: Update Xe2LPD DMC to v2.20

Release info:

	Xe2LPD FW 2.20

	Date : 02/16/2024
	Notes:

	1. Bug fix from previous products and check for new register

Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>

WHENCE

@@ -4994,7 +4994,7 @@ File: i915/mtl_gsc_1.bin
 Version: GSC API/APB v1.0, release 102.0.0.1655, SVN 1 for Meteorlake
 
 File: i915/xe2lpd_dmc.bin
-Version: DMC API/APB ver 2 release 18 for Xe2LPD
+Version: DMC API/APB ver 2 release 20 for Xe2LPD
 
 License: Redistributable. See LICENSE.i915 for details
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