ARM: dts: add wl12xx/wl18xx bindings

Replace all the pdata-quirks for setting wl12xx/wl18xx
platform data with proper DT definitions.

Signed-off-by: Eliad Peller <eliad@wizery.com>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Acked-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Tested-by: Nikita Kiryanov <nikita@compulab.co.il>
Tested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>