firmware/icl/dmc: Add v1.07 of DMC for Icelake

Add Support for Icelake DMC.
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>

WHENCE

@@ -3626,6 +3626,9 @@ Version: DMC API/ABI ver 1 - release 06 for Cannonlake
 
 File: i915/cnl_dmc_ver1_07.bin
 Version: DMC API/ABI ver 1 - release 07 for Cannonlake
+
+File: i915/icl_dmc_ver1_07.bin
+Version: DMC API/ABI ver 1 - release 07 for icelake
 License: Redistributable. See LICENSE.i915 for details
 
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