cxl/mem: Demarcate vendor specific capability IDs
Vendor capabilities occupy 0x8000 to 0xFFFF according to CXL 2.0 spec 8.2.8.2.1 CXL Device Capabilities. While they are not defined by the spec, they are allowed and not "unknown". Call this detail out in the logs to let users easily distinguish the difference. This patch is a squash of two earlier patches and take in some minor suggestions from both Vishal and Dan. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Link: https://lore.kernel.org/r/20210520204852.1070780-1-ben.widawsky@intel.comSigned-off-by: Dan Williams <dan.j.williams@intel.com>
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