led: trigger: Turn of flashing leds only once ...

The current code continuously turns leds off. Preserve the current
led status so that we only turn it off once.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: trigger: use max_value to turn on led instead of hardcoded '1' ...

For PWM LEDs '1' may be really dark. Use max_value instead.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: triggers: fix "no previous prototype for 'trigger_init'" warning ...

Here is compiler's message:

    drivers/led/led-triggers.c:148:5: warning: no previous prototype for 'trigger_init' [-Wmissing-prototypes]
    int trigger_init(void)
        ^

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: triggers: fix crash on disabling "default-on" trigger ...

Here is a sample crash log on Ritmix RZX-50:

    barebox:/ trigger
    0: panic
    1: heartbeat
    2: net rx
    3: net tx
    4: net
    5: default on (led 0)
    barebox:/ trigger -d 5
    ...
    Ooops, TLB miss on store!

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

led: Add default-on trigger ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

LED: Add LED trigger support ...

This patch allows to associate LEDs with certain triggers, such
as heartbeat or network activity.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>