[PATCH v11 1/2] leds: core: Introduce LED pattern trigger

This patch adds one new led trigger that LED device can configure the software or hardware pattern and trigger it. Consumers can write 'pattern' file to enable the software pattern which alters the brightness for the specified duration with one software timer. Moreover consumers can write

[PATCH v11 1/2] leds: core: Introduce LED pattern trigger

This patch adds one new led trigger that LED device can configure the software or hardware pattern and trigger it. Consumers can write 'pattern' file to enable the software pattern which alters the brightness for the specified duration with one software timer. Moreover consumers can write