In an effort to make HWPM driver OS agnostic, add wrappers for io functions. Jira THWPM-59 Change-Id: I9309ee15a965aa3d2f122ef959eec211c9a84623 Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2738156 Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com> Reviewed-by: Vasuki Shankar <vasukis@nvidia.com> Reviewed-by: Seema Khowala <seemaj@nvidia.com> GVS: Gerrit_Virtual_Submit