CONFIG_ARCH_BCM_MOBILE is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Broadcom Mobile SoC Support
modulename: bcm_kona_timer.ko
configname: CONFIG_ARCH_BCM_MOBILE
Linux Kernel Configuration
└─>Broadcom SoC Support
└─>Broadcom Mobile SoC Support
In linux kernel since version 3.10 (release Date: 2013-06-30)
This enables support for systems based on Broadcom mobile SoCs.