arm64: dts: librem5-devkit: Move headphone detection to sound card

This allows for automatic output source switching in userspace. Enable
the pullup on the GPIO to actually make it trigger and mark it as
active-high since detection is reversed otherwise.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
2 jobs for forward-upstream/next-20210210/devkit-sound/v1 in 84 minutes and 25 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #328623
librem5
build:aarch64:defconfig

01:24:19

 
  Package
failed #328624
librem5
pkg:aarch64:defconfig

00:00:05

 
Name Stage Failure
failed
pkg:aarch64:defconfig Package
Pulling docker image debian:buster ...
Using docker image sha256:5890f8ba95f680c87fcf89e51190098641b4f646102ce7ca906e7f83c84874dc for debian:buster ...
Preparing environment
Running on runner-cee040da-project-300-concurrent-1 via blade001...
Getting source from Git repository
Fetching changes with git depth set to 10...
Reinitialized existing Git repository in /builds/guido.gunther/linux-imx8/.git/
fatal: couldn't find remote ref refs/heads/forward-upstream/next-20210210/devkit-sound/v1
ERROR: Job failed: exit code 1