regulator: add snapshot of cpr3-regulator and dependent drivers

Add a snapshot of the cpr3-regulator family of drivers as well as
the other drivers that CPR depends upon.

This snapshot is taken as of msm-4.4
commit d24550bbf50f ("Merge "ARM: dts: msm: Add slimbus slave
device for wcn3990 on sdm630"").

Change-Id: Ic7f81d77a8642d8581242d2a7a46c26ac3eb81a4
Signed-off-by: David Collins <collinsd@codeaurora.org>