Enable protected audio video path client on mei client
bus.

Cc: Sean Z Huang <sean.z.huang@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20201116125612.1660971-2-tomas.winkler@intel.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>