commit 410af8d7 upstream.

Enable at init and disable on fini. Workaround for hardware problems.

v2 (chk): extend commit message
v3: add new function
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com> (v2)
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>