ARM: dts: msm: no interrupt moderation for timesync event ring

Interrupt moderation is not required for the time synchronization
doorbell method. Make the timer 0 from the event ring
configuration.

Change-Id: I98b16244c0ab36397f86259b24370dd35516767f
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>