ARM: at91: move SoC headers to mach-at91/include/mach

Move arch/arm/include/asm/arch-at91/*
  -> arch/arm/mach-at91/include/mach/*

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.com>

MAINTAINERS

@@ -77,7 +77,6 @@ M:	Andreas Bießmann <andreas.devel@googlemail.com>
 S:	Maintained
 T:	git git://git.denx.de/u-boot-atmel.git
 F:	arch/arm/mach-at91/
-F:	arch/arm/include/asm/arch-at91/
 
 ARM FREESCALE IMX
 M:	Stefano Babic <sbabic@denx.de>