ARM: imx: rename mach dir for mx21 and mx27 to mach-imx

Finally all imx code should end up there, start with mach-mx2.  While
touching all files rename some files to use a hyphen instead of an
underscore.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

arch/arm/Makefile

@@ -146,7 +146,7 @@ machine-$(CONFIG_ARCH_MMP)		:= mmp
 machine-$(CONFIG_ARCH_MSM)		:= msm
 machine-$(CONFIG_ARCH_MV78XX0)		:= mv78xx0
 machine-$(CONFIG_ARCH_MX1)		:= mx1
-machine-$(CONFIG_ARCH_MX2)		:= mx2
+machine-$(CONFIG_ARCH_MX2)		:= imx
 machine-$(CONFIG_ARCH_MX25)		:= mx25
 machine-$(CONFIG_ARCH_MX3)		:= mx3
 machine-$(CONFIG_ARCH_MX5)		:= mx5

arch/arm/mach-mx2/Makefile → arch/arm/mach-imx/Makefile

@@ -6,10 +6,10 @@
 
 obj-y	:=  devices.o serial.o
 
-obj-$(CONFIG_MACH_MX21) += clock_imx21.o mm-imx21.o
+obj-$(CONFIG_MACH_MX21) += clock-imx21.o mm-imx21.o
 
-obj-$(CONFIG_MACH_MX27) += cpu_imx27.o
-obj-$(CONFIG_MACH_MX27) += clock_imx27.o mm-imx27.o
+obj-$(CONFIG_MACH_MX27) += cpu-imx27.o
+obj-$(CONFIG_MACH_MX27) += clock-imx27.o mm-imx27.o
 
 obj-$(CONFIG_MACH_MX21ADS) += mach-mx21ads.o
 obj-$(CONFIG_MACH_MX27ADS) += mach-mx27ads.o

arch/arm/mach-mx2/mm-imx21.c → arch/arm/mach-imx/mm-imx21.c

 /*
- * arch/arm/mach-mx2/mm-imx21.c
+ * arch/arm/mach-imx/mm-imx21.c
  *
  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
  *

arch/arm/mach-mx2/mm-imx27.c → arch/arm/mach-imx/mm-imx27.c

 /*
- * arch/arm/mach-mx2/mm-imx27.c
+ * arch/arm/mach-imx/mm-imx27.c
  *
  * Copyright (C) 2008 Juergen Beisert (kernel@pengutronix.de)
  *

arch/arm/plat-mxc/Kconfig

@@ -49,7 +49,7 @@ config ARCH_MX5
 endchoice
 
 source "arch/arm/mach-mx1/Kconfig"
-source "arch/arm/mach-mx2/Kconfig"
+source "arch/arm/mach-imx/Kconfig"
 source "arch/arm/mach-mx3/Kconfig"
 source "arch/arm/mach-mx25/Kconfig"
 source "arch/arm/mach-mxc91231/Kconfig"