commit c40765d9 upstream.

According the spec the host should read H_CSR again
after asserting reset H_RST to ensure that reset was
read by the firmware
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ kamal: backport to 3.13-stable: also includes mei_me_hw_reset() change from
    33ec0826 mei: revamp mei reset state machine ]
Signed-off-by: Kamal Mostafa <kamal@canonical.com>