ARM: dts: msm: config voltage range for vdda in samarium

Configure the appropriate min and max voltage for
vdda supply in msm samarium board. This is a
mandatory supply for dsi panel to function.

Change-Id: I623ea0cd54fc3382868eccc595d7edb4de79863b
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>