kernel.bbclass: put bluez-dtl1-workaround to DEPENDS directly

kernel.bbclass: put bluez-dtl1-workaround to DEPENDS directly

* DEPENDS_kernel-module-dtl1-cs aren't probably included in run queue
* RDEPENDS_kernel-module-dtl1-cs probably also doesn't put it to run queue,
  because kernel-module-* are created by
  PACKAGES_DYNAMIC += "kernel-module-*"
  so not even known before even building kernel, but does work ok in runtime
* bluez-dtl1-workaround is small and fast to build so won't hurt to
  build even when kernel doesn't have this bluez module enabled in
  defconfig

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>