Update wifi p2p to direct user to enable location

Location is required for Wifi Direct so if it is not enabled
we disable the preference. Additionally, this fixes some minor
update issues in Wifi Wakeup that was also affecting wifi p2p.
Basically they weren't updating when location settings changed
until you left the screen and came back. Now they do.

Test: robotests, manual
Bug: 120552223
Change-Id: Ibd386fcfbef881cae3d871152675f1cab5e4a041