leds: lm355x: Drop surplus include

This driver includes <linux/gpio.h> but does not use
any symbols from that file, so drop the include.

Cc: G.Shark Jeong <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
Signed-off-by: Pavel Machek <[email protected]>
1 file changed