drm/i915/firmware: Add v2.0.0 of HuC for Broxton

Add Support for the latest version of BXT.
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>

WHENCE

@@ -3842,6 +3842,9 @@ Version: HuC API/APB ver 1 - release 7 for Broxton
 File: i915/bxt_huc_ver01_8_2893.bin
 Version: HuC API/APB ver 1 - release 8 for Broxton
 
+File: i915/bxt_huc_2.0.0.bin
+Version: HuC API/APB ver 2 - release 0 for Broxton
+
 File: i915/kbl_huc_ver02_00_1810.bin
 Version: HuC API/APB ver 2 - for Kabylake