octeontx2-af: debugfs: Add Channel info to RPM map

commit 96ea01cba20687fd3c938c200eaabb8da92fb31b from
git@git.assembla.com:cavium/WindRiver.linux.git

Display channel info in the RPM map debugfs output.

Change-Id: If1e39b5fd51377e8bda49a39925186c3e8a2e82c
Signed-off-by: Linu Cherian <lcherian@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/128164


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
(cherry picked from commit 6e4de62dfe9711ef14520293aab8168ec0b6ab8a)
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/129382


Signed-off-by: Bo Sun <Bo.Sun.CN@windriver.com>