[PATCH v2] MIPS: NI 169445 board support

This adds support for the National Instruments 169445 MIPS system. Changes from v1: - Add GPIO patch and board support patch to one set - Address Rob Herring's device tree feedback - Convert the 169445 to a generic MIPS board - Switch to the newer stmmac driver for the board's ethernet

[PATCH v2] MIPS: NI 169445 board support

This adds support for the National Instruments 169445 MIPS system. Changes from v1: - Add GPIO patch and board support patch to one set - Address Rob Herring's device tree feedback - Convert the 169445 to a generic MIPS board - Switch to the newer stmmac driver for the board's ethernet