arm/dt: msm8974: Add support ultrasound to Fluid

The msm8974 Fluid has additional lineouts for ultrasound.
Update audio routing node and configure lineout amplifier gpio to support
ultrasound.

Change-Id: I76b9a46852f6e56d599328cfd316f39e4550e65b
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
1 file changed