RT Linux lockup with x86 package temp driver

x86 package temp driver has issue as spin locks are preemptible in
RT Linux. When this driver is present, coretemp will be there, so
fallback to coretemp on RT Linux.
Merge branch 'master' of https://github.com/01org/thermal_daemon
data: thermald.conf: start only at runlevels 2,3,4,5 (LP: #1294895)

There is a slim chance that thermad can start before /sys is mounted,
so only start it once we're in run levels 2 to 5

Signed-off-by: Colin Ian King <colin.king@canonical.com>