octeontx2-af: recover CPT engine when it gets fault

[ Upstream commit 07ea567d ]

When CPT engine has uncorrectable errors, it will get halted and
must be disabled and re-enabled. This patch adds code for the same.

Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: a88e0f93 ("octeontx2: Detect the mbox up or down message via register")
Signed-off-by: Sasha Levin <sashal@kernel.org>