MFC r347274:
Add MCC (Management Component Control) register definitions in mlx5core.

MCC (Management Component Control) allows to control a firmware
component update.

MCDA (Management Component Data Access) allows to read and write
a firmware component.

MCQI (Management Component Query Information) allows to query
information about firmware components.

Linux commit:
4717628938423fcba0aa8fa889e9fed4eb6a655f

Submitted by: slavash@
Sponsored by: Mellanox Technologies