gcw0: add tune file for mips32r2 (only hard-float)

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
gcw0: initial commit of machine config

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>
gcw0: initial commit of custom kernel 3.12

Signed-off-by: Andrea Adami <andrea.adami@gmail.com>