octeontx2-af: load NPC profile via firmware database

commit 199d56958f3b48202e54ec5f9a9f6799ac54054b from
git@git.assembla.com:cavium/WindRiver.linux.git

Currently NPC profile (KPU + MKEX) can be loaded using firmware
binary in filesystem scheme. Enhancing the functionality to load
NPC profile image from firmware database. It uses the same
technique as used for loading MKEX profile. Firstly firmware binary
in kernel is checked for a valid image else tries to load NPC profile
from firmware database and at last uses default profile if no proper
image found.

Change-Id: I17ed69443142b29ef27c1e8544e62d65ad6e546f
Signed-off-by: Harman Kalra <hkalra@marvell.com>
Reviewed-on: https://sj1git1.cavium.com/c/IP/SW/kernel/linux/+/38285


Tested-by: sa_ip-sw-jenkins <sa_ip-sw-jenkins@marvell.com>
Reviewed-by: Sunil Kovvuri Goutham <Sunil.Goutham@cavium.com>
Signed-off-by: Ruiqiang Hao <Ruiqiang.Hao@windriver.com>