[RFC] SoC name and revision in /proc/cpuinfo

[Jean-Christophe PLAGNIOL-VILLARD]

Hi Russell,

	On AT91 for some userland library we need to known the cpu model and revision
	so I'd like to known if it's ok with you to extend it?

	as
	cpu familly:	at91
	cpu type:	at91sam9g20
	cpu revision:	1.1

Best Regards,
J.