ARM: at91: collect SoC sources into mach-at91

This commit moves source files as follows:

  arch/arm/cpu/arm920t/at91/*   -> arch/arm/mach-at91/arm920t/*
  arch/arm/cpu/arm926ejs/at91/* -> arch/arm/mach-at91/arm926ejs/*
  arch/arm/cpu/armv7/at91/*     -> arch/arm/mach-at91/armv7/*
  arch/arm/cpu/at91-common/*    -> arch/arm/mach-at91/*

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Acked-by: Andreas Bießmann <andreas.devel@googlemail.co>
diff --git a/MAINTAINERS b/MAINTAINERS
index 74a56ec..a558bd4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -76,8 +76,7 @@
 M:	Andreas Bießmann <andreas.devel@googlemail.com>
 S:	Maintained
 T:	git git://git.denx.de/u-boot-atmel.git
-F:	arch/arm/cpu/armv7/at91/
-F:	arch/arm/cpu/at91-common/
+F:	arch/arm/mach-at91/
 F:	arch/arm/include/asm/arch-at91/
 
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