defconfig: apq8084: msm8974: enable SMB349 charger driver support

SMB349 is a single path switching mode charger chip. Enable the driver
on apq8084 and msm8974 based devices.

Change-Id: I69206020965a48f725aa85bf6b084df9fe8c4473
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>