Support for AC-PHY (802.11ac) devices (BROKEN)

configname: CONFIG_B43_PHY_AC

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>Support for AC-PHY (802.11ac) devices (BROKEN)
In linux kernel since version 4 (release Date: 2015-04-12)  
This PHY type can be found in the following chipsets:
PCI: BCM4352, BCM4360

Say N, this is BROKEN and crashes driver.