Removed selection of COMMON_CLKDEV by CONFIG_ARCH_MX5.  This is handled
in 03e09cd8.

arch/arm/plat-mxc/iomux-mx1-mx2.c was moved to
arch/arm/plat-mxc/iomux-v1.c in 5e2e95f5
and got bug fixed in 5c17ef87.  The bug
in arch/arm/plat-mxc/iomux-v1.c isn't present any more since
bac3fcfa, so
arch/arm/plat-mxc/iomux-mx1-mx2.c is simply deleted.

Conflicts:
	arch/arm/plat-mxc/Kconfig
	arch/arm/plat-mxc/Makefile
	arch/arm/plat-mxc/iomux-mx1-mx2.c
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>