linux-firmware/i915: Add HuC 1.07.1398 for broxton

This release is to support the following features:
Gen9 HuC BXT BRC Kernel:
-       Update SkipFrame to avoid conditional batch buffer issue in driver
-       Updated for open source driver
-       Fix overflow issue
-       Enable ME distortion based QP adjustment
-       Fix incorrect cost table loading when ME detection is enabled

Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>

WHENCE

@@ -3212,6 +3212,9 @@ Version: Guc API/ABI ver 6 - release 1 for Skylake
 File: i915/skl_huc_ver01_07_1398.bin
 Version: HuC API/ABI ver 1 - release 7 for Skylake
 
+File: i915/bxt_huc_ver01_07_1398.bin
+Version: HuC API/APB ver 1 - release 7 for Broxton
+
 License: Redistributable. See LICENSE.i915 for details
 
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