/bin/wifi:  Make --band work for 'wifi setclient'.

Currently, the --band argument of 'wifi setclient' just chooses a
radio that supports the desired band. If this is a dual-band radio
(e.g. Marvell 8897), we may join an AP with the wrong band. This
commit fixes that by specifying freq_list in the wpa_supplicant
config.

Change-Id: If6062c17910f543d812d93c42c7bd682db2c75a7
4 files changed