Currently, 6g channels are sorted based on the weightage of each
channel. Frequencies are sorted but the flags associated to each
channel are not updated properly. So, channels carry invalid
flags to firmware and firmware may miss to scan few 6g channels
based on these flags and may scan few 6g channels unnecessarily.
Copy flags also while sorting frequencies to maintain the flags
of each channel as it is.
Also, change the type of phymode to enum scan_phy_mode
from uint32_t.
Change-Id: I0a2330faab1b738f2d7eff3d39ccbfffd51dfde0
CRs-Fixed: 2840029
82acedd149