soc/intel/skylake: Add ASL entries for IMGU and CIO2 devices

Add ASL entries for IMGU and CIO2 devices

* _CCA ACPI object to report that there is no Cache Coherent DMA support.
* CAMD ACPI object to specify the device type.
These ACPI objects are used by Intel kernel drivers.

BUG=b:36580624
BRANCH=none
TEST=Build and boot poppy. Dump and verify that DSDT table
has the entries for IMGU and CIO2 devices.

Change-Id: I13050253e18408cdb1e196f8003b3f43299aa5a5
Signed-off-by: Sowmya V <v.sowmya@intel.com>
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/18968
Tested-by: build bot (Jenkins)
Reviewed-by: Sumeet R Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
1 file changed