CONFIG_ARCH_BCM_NSP is not available for thedefaultarchitecture x86.
Result is shown for architecture arm
Broadcom Northstar Plus SoC Support
modulename: bcm_nsp.ko
configname: CONFIG_ARCH_BCM_NSP
Linux Kernel Configuration
└─>Broadcom SoC Support
└─>Broadcom Northstar Plus SoC Support
In linux kernel since version 3.10 (release Date: 2013-06-30)
Support for Broadcom Northstar Plus SoC.
Broadcom Northstar Plus family of SoCs are used for switching control
and management applications as well as residential router/gateway
applications. The SoC features dual core Cortex A9 ARM CPUs,
integrating several peripheral interfaces including multiple Gigabit
Ethernet PHYs, DDR3 memory, PCIE Gen-2, USB 2.0 and USB 3.0, serial and
NAND flash, SATA and several other IO controllers.
Broadcom Northstar Plus family of SoCs are used for switching control
and management applications as well as residential router/gateway
applications. The SoC features dual core Cortex A9 ARM CPUs,
integrating several peripheral interfaces including multiple Gigabit
Ethernet PHYs, DDR3 memory, PCIE Gen-2, USB 2.0 and USB 3.0, serial and
NAND flash, SATA and several other IO controllers.