ARM: dts: msm: Initial device tree changes for MSM8909

Changes include removal of audio and video device nodes.
Adding the necessary pinctrl changes as per 3.18 kernel
pinctrl structure.

Change-Id: If04e3cd7d93a84745d996f31cbeae6f6743a4776
Signed-off-by: Venkatesh Yadav Abbarapu <vabbar@codeaurora.org>