net/mlx5: Store page counters in a single array

[ Upstream commit c3bdbaea ]

Currently, an independent page counter is used for tracking memory usage
for each function type such as VF, PF and host PF (DPU).

For better code-readibilty, use a single array that stores
the number of allocated memory pages for each function type.

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Stable-dep-of: 9965bbeb ("net/mlx5: Expose SF firmware pages counter")
Signed-off-by: Sasha Levin <sashal@kernel.org>