This patch adds 3430 gpio support.

It also contains a fix by Paul Walmsley <paul@pwsan.com> to use the
correct clock names for OMAP3430.
Signed-off-by: NSyed Mohammed Khasim <x0khasim@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>