power: max17048: Use Tskin instead of Batt temp

power: max17048: Use Tskin instead of Batt temp

In tegratab, we can use Tskin as battery temperature.
Acoording to thermal test, there is small gap between Tskin and Battery temp.
Tegratab has limitation by H/W to get real battery temp.

Bug 1304204
Bug 1317331

Change-Id: Ie0b996bcd7ba05a36c3a77870376b1e516729f4e
Signed-off-by: Hyongbin Kim <hyongbink@nvidia.com>
Reviewed-on: http://git-master/r/258672
(cherry picked from commit 133893da47e2f420f61ae3b776c960ad45f0302e)
Reviewed-on: http://git-master/r/289141
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Gabby Lee <galee@nvidia.com>