octeontx2-af: cn10k: mcs: Manage the MCS block hardware resources

To establish a macsec connection association netdev driver
needs hardware resources like SecY, TCAM flows, SCs and SAs.
This patch manages allocating, freeing and configuring those
resources. AF consumers can request resources and configure them
via these mailbox messages. AF can allocate until it runs out of
hardware resources.

Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>