ARM: dts: msm: Add PCIe and MHI device

PCIe EP and MHI(Modem host interface) device driver
are used by clients to communicate with the host
over PCIe using MHI protocol. Disable PCIe RC
and WLAN to support enabling PCIe in EP configuration.

Change-Id: Ib3c0d0d15892865071f7d26ca842a72922c490e1
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>