ARM: dts: msm: Add SMSC HUB device for msm8926 V2 MTP

USB UICC card is connected to the HSIC controller via a SMSC
HUB on MTP boards. The SMSC HUB device acts as a parent to the
HSIC. Move HSIC device node as a sub node of SMSC HUB device node.

Standalone HSIC configuration is used on CDP boards. Hence pass
SMSC HUB model-id as 0.

Change-Id: I0c751a90ad9b60adeb4ff69a1ee44d20495903aa
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>