BACKPORT: FROMLIST: drm/amd/powerplay:add hwmgr callback to update nbpstate on Carrizo

Add hwmgr callback "update_nbdpm_pstate".This will use to access
"cz_nbdpm_pstate_enable_disable" function to enable/disable low
memory pstate.

(git am from https://patchwork.freedesktop.org/patch/262321/)

Backport: Apply changes to cz_hwmgr.c

BUG=b:113758904
TEST= build and deploy kernel.

Change-Id: I818e022580a25ab1e510a2479a70312b0d8a944c
Signed-off-by: suresh guttula <suresh.guttula@amd.com>
Reviewed-on: https://chromium-review.googlesource.com/1304333
Commit-Ready: Suresh Guttula <suresh.guttula@amd.corp-partner.google.com>
Tested-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Deepak Sharma <deepak.sharma@amd.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
(cherry picked from commit a4e88991935c0a4168858ff57293bad561805c03)
Reviewed-on: https://chromium-review.googlesource.com/c/1357781
Commit-Queue: Daniel Kurtz <djkurtz@chromium.org>
2 files changed