[RFC] ARM: generate mach-types.h instead of static version

[Jean-Christophe PLAGNIOL-VILLARD]

Hi,

	I think it will be better for arm mach tracking and update
	to do the same as the kernel generate it instead of copy a generate
	version from Linux.

	as done here
	http://game.jcrosoft.org/git?p=u-boot-v2.git;a=commit;h=ae211423c189037d5d3ad10a2adfa93ad746a54c

Best Regards,
J.