net/mlx5: Add PPHCR to PCAM supported registers mask

Add the PPHCR bit to the port_access_reg_cap_mask field of PCAM
register to indicate that the device supports the PPHCR register
and the RS-FEC histogram feature.

Signed-off-by: Alexei Lazar <alazar@nvidia.com>
Reviewed-by: Yael Chemla <ychemla@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1761136182-918470-2-git-send-email-tariqt@nvidia.com


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