wpa_supplicant 4.9G support

https://android.googlesource.com/platform/external/wpa_supplicant_8/+/master/src/drivers/driver_nl80211.c

1.                         /* crude heuristic */
   
2.                         if (mode->channels[idx].freq < 4000)
   
3.                                 if (mode->channels[idx].freq == 2484)
   
4.                                         mode->channels[idx].chan = 14;
   
5.                                 else
   
6.                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
   
7.                         else
   
8.                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;

this code should implement 4.9G support, if my wifi driver register 184 channel support, driver_nl80211.c will get negative channel,because of (4920/5) - 1000 = -16, i think this code should implement as following:

else if (mode->channel[idx].freq < 4999)

{

/* handle 4.9G */

/* 4920 -> 184 channel, 4940 -> 188 channel, 4960 -> 192 channel, 4980 -> 196 channel */

mode->channels[idx].chan = (mode->channels[idx].freq - 4000)/5;

}

else

{ /* handle 5G */

mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;

}