arm/dt: msm8610: add qpnp charger node to the device tree

Provide support for charger in 8110 by adding the DT node.

Also, enable the charger for cdp and mtp targets.

Note that charging is disabled in this commit.

Change-Id: I305be5d8675cedb54f5261d5ef9b34f029b314a9
Signed-off-by: Xiaozhe Shi <xiaozhes@codeaurora.org>