ARM: dts: msm: Enable WLED and LCDB devices for sm6150

WLED and LCDB device nodes are needed for the display to
be functional. Enable the same for sm6150 idp/mtp/cdp platforms.

Change-Id: Iab1ecaf3ae9eca77210506cd2dc4c8d1d82847f0
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>