ARM: dts: msm: Add wcnss node for msmtitanium

Add dtsi node for wcnss components and pinctrl support.
These are required to initialize pronto subsystem and
to perform wlan  functionality.

CRs-Fixed: 951846
Change-Id: I709eb8e3a8cecdbd1971b70f7f5ba19d1eecd78d
Signed-off-by: Sunkad, Anand Ningappa <asunka@codeaurora.org>