arm64: config: librem5: Enable HKS rfkill

Signed-off-by: Guido Günther <guido.gunther@puri.sm>
2 jobs for mrs/rfkill in 64 minutes and 33 seconds
Status Name Job ID Coverage
  Build
passed build:aarch64 #327891
librem5

00:53:46

passed build:deb #327892
librem5:arm64

01:04:31