[PATCH] ARM: OMAP: OMAP_GPIO_SWITCH doesn't need OMAP_BOOT_TAG

I can't see any reason why OMAP_GPIO_SWITCH depends on OMAP_BOOT_TAG;
it compiles fine without it. This patch removes the Kconfig dependency.

Here's an updated patch that not only removes the dependency but cleans
up the Kconfig description to talk about sysfs rather than the input
layer.

Signed-off-by: Jonathan McDowell <noodles@earth.li>
Acked-by: Paul Mundt <paul.mundt@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>