CONFIG_ARCH_BCM_HR2 is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

Broadcom Hurricane 2 SoC support

modulename: bcm_hr2.ko

configname: CONFIG_ARCH_BCM_HR2

Linux Kernel Configuration
└─>Broadcom SoC Support
└─>Broadcom Hurricane 2 SoC support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Enable support for the Hurricane 2 family,
which includes the following variants:
BCM53342, BCM53343, BCM53344, BCM53346.

source code:
arch/arm/mach-bcm/bcm_hr2.c