net/mlx5: Fix setting ec_function bit in MANAGE_PAGES

When ECPF is a page supplier, reclaim pages missed to honor the
ec_function bit provided by the firmware. It always used the ec_function
to true during driver unload flow for ECPF. This is incorrect.

Honor the ec_function bit provided by device during page allocation
request event.

Fixes: d6945242 ("net/mlx5: Hold pages RB tree per VF")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Daniel Jurgens <danielj@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>