arm/dt: 8610: correct coresight atb funnel port connections

Correct the atb port connection for stm to funnel0 port7
and etm connection to port6. These correct funnel configurations
are required for ETM and STM tracing to get properly enabled.

Change-Id: I1a76a150771bac3a76eb4e09dd066a24c6a1fb34
Signed-off-by: Aparna Das <adas@codeaurora.org>