ARM: dts: msm: Fix RPMSG intents field for sdm855

RPMSG clients are using intents instead of qcom,intents to define their
pre-queued intent list. Change this value to the correct label.

Change-Id: If1dbdcdbbe62602b56fa0e322ce0ba03b7e20a85
Signed-off-by: Chris Lew <clew@codeaurora.org>