[U-Boot] cmd: Kconfig: LED command depends on LED subsystems

[Tom Rini]

On Thu, Jan 03, 2019 at 09:08:42AM +0100, Jan Kiszka wrote:

> From: Jan Kiszka <jan.kiszka at siemens.com>
> 
> Without CONFIG_LED, we get
> 
> cmd/built-in.o: In function `show_led_state':
> cmd/led.c:40: undefined reference to `led_get_state'
> cmd/built-in.o: In function `do_led':
> cmd/led.c:99: undefined reference to `led_get_by_label'
> cmd/led.c:108: undefined reference to `led_set_state'
> 
> Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>

Applied to u-boot/master, thanks!

-- 
Tom
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