[PATCH] arcnet/com20020: add LEDS_CLASS dependency

[David Miller]

From: Arnd Bergmann <arnd at arndb.de>
Date: Tue, 03 Nov 2015 14:51:29 +0100

> The newly added led trigger support in the com20020-pci driver causes
> build errors when CONFIG_LEDS_CLASS is disabled:
> 
> drivers/built-in.o: In function `com20020pci_probe':
> (.text+0x185dc4): undefined reference to `devm_led_classdev_register'
> (.text+0x185dd8): undefined reference to `devm_led_classdev_register'
> 
> This adds a Kconfig dependency to prevent the invalid configurations.
> Other drivers appear to be split 50:50 between 'select' and 'depends on'
> for this symbol, I picked 'depends on' as I could not find a common
> policy and it generally causes fewer problems.
> 
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>
> Fixes: 8890624a4e8c ("arcnet: com20020-pci: add led trigger support")

Applied.