81d446b045 introduced incomplete
support for this device.
This patch attempts to correct the situation based on OEM source
code.
LED1-3 are GSM mode on OFW (2G/3G/4G) hence unassigned here.
Signed-off-by: Thibaut VARÈNE <hacks@slashdirt.org>
Tested-by: David Ehrmann <ehrmann@gmail.com>