refactor(tc): move SCMI nodes into the 'firmware' node

As Linux 6.1 and later kernels require the SCMI nodes must be placed in
a firmware node, this patch adds the 'firmware' node and puts SCMI nodes
under it.

Change-Id: I37855095b8b0e5051c5de6e8db30e43f6220f9de
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Signed-off-by: Leo Yan <leo.yan@arm.com>
1 file changed