ARM: dts: msm: add stub regulator devices for Kona

Add stub regulator devices for the SMPS, LDO, and BOB regulators
found on the PM8150, PM8150A, and PM8009 PMIC chips which are
used on Kona boards.  This ensures that consumers can make use
of the regulators which have appropriate voltage limits.

Change-Id: Ia8f134e5b50bc1c778586794fdfae9703e285da6
Signed-off-by: David Collins <collinsd@codeaurora.org>