ARM: shmobile: armadillo800eva: Use gpio_set_value() to set GPIO value

The GPIO is already configured as an output, there's no reason to use
gpio_direction_output() just to set the output value. Use
gpio_set_value() instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>