ARM: dts: qcom: Add second trip to xo-therm-usr for atoll

There are two clients in userspace who can request different trip
thresholds to xo-therm. Add another thermal zone trip node
to xo-therm for second client to configure its own threshold.

Change-Id: I0f30d424bd402edfd1f79976ce5aec2381e7396e
Signed-off-by: Minghao Zhang <minghao@codeaurora.org>