ARM: dts: msm: Add non-removable ufs property for SDM630

Defines the non-removable property for UFS device node.
This basically lets the driver know that UFS is the
boot device.

Change-Id: I1c8aa298af4afc7e42d0c8a3690f7d3360e37647
Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org>