power: bq2419x: add charge enable flag.

Add chg_enable flag to enable charging.
When charger pdata is absent, default disable charger.

Bug 1260994

Change-Id: I5998db924ded27df244f34b0d91fb1a617df6da4
Signed-off-by: Hyongbin Kim <hyongbink@nvidia.com>
Reviewed-on: http://git-master/r/217703
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Syed Rafiuddin <srafiuddin@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
GVS: Gerrit_Virtual_Submit
2 files changed