arm64: config: librem5: Enable HKS rfkill

Signed-off-by: Guido Günther <guido.gunther@puri.sm>
2 jobs for mrs/rfkill in 73 minutes and 51 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build:aarch64 #328013
librem5

00:33:30

passed build:deb #328014
librem5:arm64

01:02:16