ARM: dts: msm: Update thermal node for FSM9900

Update thermal node for thermal monitoring support
for the FSM9900 target.

Change-Id: Ieb9476946ebd7e6af5a3668fc831397cf6d6a746
Acked-by: Kaushik Sikdar <ksikdar@qti.qualcomm.com>
Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>