ARM: dts: msm: Split device trees for msm8996 v3.0 and msm8996 v3.1

Separate device tree files for msm8996 v3.0 are introduced to
include overrides specific to this early version of msm8996 v3.
The v3.0 trees include the base configuration from msm8996-v3.dtsi.

msm8996 v3.1 and later will use device trees named "msm8996-v3-*"
directly.

v3.0 device trees are not created for board variants which are
known to not exist (ex. MTPs with pmk8001, and apq LiQUID and
FLUID variants).

Change-Id: Id64e19e979d7bc305edaceb9231045644c051376
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>