ARM: dts: msm: add L2 as first device in the spm device sequence

When the device is entering into system low power it will read
the l2 flag of the first device in the spm device sequence and
sends it to the trustzone. Change the device sequence in the dts
to make L2 as the first device.

Change-Id: Iaf70b92e1b58e364cbb6475d3d591b8cbeb68b3e
Signed-off-by: Anil kumar mamidala <amami@codeaurora.org>