Make lmkd permissive or unconfined.

Otherwise we'll never see denials in userdebug or eng builds and
never make progress on confining it.  Of course we cannot truly
test until it is released into AOSP, but this prepares the way
and potentially allows for internal testing and collection of denials.

Change-Id: Ic9d1ba872d43f322e39ca6cffa0e725f1e223e7b
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>