soc/intel/(apl,skl,cnl,common): Move mkhi_hdr structure definition to common
Removed mkhi_hdr structure definition from multiple SOCs, and moved to common.
TEST=Built code for Hatch, apollolake boards.
Change-Id: Ifeba0ed4d98975049179d1b47fb22c06a927dc29
Signed-off-by: Sridhar Siricilla <sridhar.siricilla@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35545
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Subrata Banik <subrata.banik@intel.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>