msm: coincell: Add QPNP coincell charger driver

Add a QPNP coincell charger driver which can be used to charge a
coincell battery or backup capacitor.  This driver provides an
interface to configure a QPNP coincell device via device tree
properties.

Change-Id: I3a9dbf740e909d38f80c959fb45970ebebe69c46
CRs-Fixed: 446402
Signed-off-by: David Collins <collinsd@codeaurora.org>
4 files changed