In qsap_set_channel function, write the gFixedRate to qcom_cfg.ini
file instead of trying to write to hostapd.conf.
Change-Id: I9b9fa65dde580ec2489bbe8e0e37af5bfd44d72a
CRs-fixed: 298556
Editing config values in Qocm_cfg.ini disables "save settings" option on GUI.
After fastboot, when SoftAP turned ON first time beacon shows WMM and Country elements info but SoftAP UI shows these options as disabled
After selecting the save-settings button GUI was always sending the command to change the energy_detect_threshold. Code is updated to send
it only if energy_detect_threshold is changed
Bug fixed to return correct security mode
Error happened after saving the SoftAP configuration
CRs-Fixed: 260651 261515 261401
Change-Id: Ic9454c35eeaa23ccc8b6e340695b4c41bca28b47