octeontx2-af: add mbox to return CPT_AF_FLT_INT info

commit cc24daa71de1e5a582c516a7124f0e6b99389a01 from
git@git.assembla.com:cavium/WindRiver.linux.git

Adds a new mailbox to return CPT faulted engines bitmap
and recovered engines bitmap.

Signed-off-by: Srujana Challa <schalla@marvell.com>
Change-Id: Ie59a0584f8fa8f3208d67c9d66bd1a055df9255b
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/87170


Reviewed-by: Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Tested-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>