i915: Add GuC firmware v33.0.4 for EHL

First GuC firmware release for EHL.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>

WHENCE

@@ -3994,6 +3994,9 @@ Version: DMC API/APB ver 2 release 4 for Tigerlake
 File: i915/icl_huc_9.0.0.bin
 Version: Huc API/APB ver 9 release 0 for Icelake
 
+File: i915/ehl_guc_33.0.4.bin
+Version: Guc API/APB ver 33 release 0 for Elkhartlake
+
 License: Redistributable. See LICENSE.i915 for details
 
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