ARM: dts: msm: Add property to choose right reset sequence for msm8940

Reset sequence of modem in msm8937 is different than msm8940, so
replacing the property for desired reset sequence of modem.

Change-Id: I3effcb6dbcf5dc03ebed79e606223e02a5d579b6
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@codeaurora.org>