RNDIS + CDC Serial + Storage configuration

configname: CONFIG_USB_G_MULTI_RNDIS

USB Gadget Drivers
└─>RNDIS + CDC Serial + Storage configuration
In linux kernel since version 2.6.33 (release Date: 2010-02-24)  
This option enables a configuration with RNDIS, CDC Serial and
Mass Storage functions available in the Multifunction Composite
Gadget. This is the configuration dedicated for Windows since RNDIS
is Microsoft's protocol.

If unsure, say "y".