ARM: dts: msm: Enable blue LED on boot for LiQUID8994

By turning on the blue LED in 8994 LiQUID devices we
get a notification that the boot process has started.
The blue LED will be turned-on in bootloader and be turned-
off when HLOS display takes over.

Change-Id: Ief8e934afd3a798afff81cbaec78d308f2d2b400
Signed-off-by: Shimrit Malichi <smalichi@codeaurora.org>