net/mlx5: Add support for enabling PTM PCI capability

Since the kernel doesn't support enabling Precision Time Measurement
for an endpoint device, enable the PTM PCI capability in the driver.

Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20240730134055.1835261-3-tariqt@nvidia.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>