i915: Add HuC firmware v9.0.0 for EHL

First HuC firmware release for EHL.

v2: rename blob file in accordance to the new
unified convention.
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>

WHENCE

@@ -3997,6 +3997,9 @@ 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
 
+File: i915/ehl_huc_9.0.0.bin
+Version: Huc API/APB ver 9 release 0 for Elkhartlake
+
 License: Redistributable. See LICENSE.i915 for details
 
 --------------------------------------------------------------------------