supply: qcom: add battery.o earlier

The initialization code in battery.c creates important votables like
FCC, FV which every many other charging drivers are dependent on.
The dependent charging drivers keep probe deferring until the votables
are created.

Ensure that battery.c's initialization code is invoked before other
drivers get added.

Change-Id: I52990baef7f7c4095e635728511e120c1dbe5e9d
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>