FROMLIST: dts: foundation: Add TRBE node for all CPUs

TRBE buffer maintenance interrupt is a PPI which needs to be communicated
from the platform via a DT node.

Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Link: TODO ADD LINK TO V4 WHEN POSTED
Change-Id: I2dda7fb647ee8630921319aa5ad1462f826d1d04