ARM: plat-versatile: update defconfigs for Versatile LEDs

As we moved the Versatile LEDs to the LEDs subsystem and made
it a module, the config options are no more default-selected.
Make sure all users still experience LEDs properly by updating
all RealView and Versatile defconfigs.

Cc: Bryan Wu <cooloney@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>