arm64: dts: imx8mq-librem5: disable the voice coil driver

Since we use the device from userspace for now, let's disable
this driver and bring it back when we switch to using it.
2 jobs for pureos/byzantium in 59 minutes and 59 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #348578
librem5
build:aarch64

00:19:22

passed #348579
librem5:arm64
build:deb

00:59:59