UBUNTU: SAUCE: Redpine: resolve power save issue after S4 resume

UBUNTU: SAUCE: Redpine: resolve power save issue after S4 resume

BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1753438
BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1753439
We are redownloading the firmware after S4 resume. We observed in
stress test that mac80211 sometimes gives power save request after
resume which causes the firmware in bad state.
mac_ops_resumed flag is added to skip that request until initialisation
is done.

Signed-off-by: Sanjay Kumar Konduri <sanjay.konduri@redpinesignals.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Shrirang Bagul <shrirang.bagul@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>