ARM: dts: msm: Add SMB1390 device

SMB1390 is a div2 charge pump capable of delivering 6A charge current
with very high efficiency. It can work either as 2s to 1s pre-regulator
or as a companion charger when paired with Qualcomm Technologies, Inc.’s
family of standalone chargers, e.g. PM8150B, to enable a high current,
low profile Li+ battery charging system.

Change-Id: I0d394b8244f853670eeda6f1cbf38dd2a55c1d7e
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>