msm: thermal: Update the hotplug initialization

Hotplug initialization will trigger a hotplug if temperature stays above
the trip threshold and will try to online if temperature is below the
clear threshold. Since KTM does boot mitigation till thermal-engine is
running, hotplug init can be called twice. First from post init script
and second when the hotplug task is initialized. There is a possiblity
the first init call can set the hotplug local mask and the second init
call wont clear or update the mask with correct value if the temperature
is between the hotplug trip and clear threshold.

Update the hotplug init API to perform the check only if the hotplug
task is initialized. Also the hotplug check will clear the hotplug local
mask if the temperature is not above the trip threshold.

Bug: 29464076
Change-Id: Ica1325f8aa65c338ea0e5b201f566607c3ddf904
Signed-off-by: Ram Chandrasekar <rkumbako@codeaurora.org>
Signed-off-by: Sivaram Vemapti <svempati@codeaurora.org>
Signed-off-by: mydongistiny <jaysonedson@gmail.com>