Use PTP-TSC timestamp capture feature instead of PTP HW register read to improve MAC-2-MAC sync accuracy. Bug 3893803 Change-Id: I5b5876cedf9b2fd200749623d9b047dc27eeb0a8 Signed-off-by: Rakesh Goyal <rgoyal@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/kernel/nvethernetrm/+/2835302 Reviewed-by: Bhadram Varka <vbhadram@nvidia.com> Reviewed-by: svcacv <svcacv@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> Reviewed-by: Srinivas Ramachandran <srinivasra@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>