Fixed logging format

Change-Id: I89905d56ee3933dfca32889df433d899745de847
Allow building without Wifi HAL

 * For example devices with older broadcom chips doesn't like
   this. Especially when driver is built as a module. They will
   reboot when device is going to sleep.

Change-Id: Ia186ce3a59a082cfe98d283492fa450014af52f4