icE1usb fw: Add function to enable/disable E1 led runner

Also don't force enable the runner in the e1_platform_led_set
callback.

Due to GPIO shortage, the E1 leds control are multiplexed with
SPI so this adds a method to temporarely stop the runner so SPI
can be used.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Change-Id: Ie671daab5ee5e0b5f58de9d4fef1f0ca7d6d02b6
2 files changed