FROMGIT: dt-bindings: firmware: arm,scmi: Introduce property max-rx-timeout-ms

System Controller Management Interface(SCMI) firmwares might have different
designs depending on the platform: the maximum receive channel timeout
value might vary depending on the specific underlying hardware and firmware
design choices.

Introduce the general property max-rx-timeout-ms property to describe the
transport needs of a specific platform design.

Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
[Cristian: reworded commit message, s/mailbox/transport in description]
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Peng Fan <peng.fan@nxp.com>  #i.MX95 19x19 EVK
Message-Id: <20240730144707.1647025-3-cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>

Bug: 364340026
(cherry picked from commit 3a5e6ab0
https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git

 for-linux-next)
Change-Id: I82b3e80787e0be554a45c388e8334a5a4c9010c8
Signed-off-by: Zhipeng Wang <zhipeng.wang_1@nxp.com>