kernelconfig_penguin

National Semiconductor devices

configname: CONFIG_NET_VENDOR_NATSEMI

Linux Kernel Configuration
└─> Device Drivers
└─> Network device support
└─> Ethernet driver support
└─> National Semiconductor devices

In linux kernel since version 3.1 (release Date: 2011-10-24)  

If you have a network (Ethernet) card belonging to this class, say Y.

Note that the answer to this question doesn't directly affect the
kernel: saying N will just cause the configurator to skip all
the questions about National Semiconductor devices. If you say Y,
you will be asked for your specific card in the following questions.