msm: thermal: set the core_control_enabled after offline cores update

The variable for offline core is not yet updated in the initial state, but
msm_thermal try to control core at that time and may access the
offlined core(s). It would cause the watchdog bite due to this.

Change-Id: I6abd55b22f3e09ab44e8df0d6fbb8e82cd9e482c
Signed-off-by: Devin Kim <dojip.kim@lge.com>
Signed-off-by: flar2 <asegaert@gmail.com>