firmware: arm_scmi: Convert OF-only paths to generic fwnode in SCMI core

Switch SCMI core plumbing from struct device_node * to struct
fwnode_handle * so the core can describe SCMI instances and protocols using
firmware nodes rather than OF nodes directly.

This change:
  - Replaces core OF property lookups with fwnode_property_*() helpers.
  - Plumbs fwnode through the SCMI device creation and channel setup paths.
  - Updates transport ->chan_available() callbacks to take a fwnode.
  - Stores per-protocol child fwnodes in info->active_protocols so the core
    can later locate the descriptor for a given protocol ID.
  - Updates mailbox/optee/smc/virtio transports to accept fwnodes and map
    back to OF nodes where their existing parsing remains DT-specific.

DT-only transports such as mailbox, OP-TEE and SMC still parse DT
properties by mapping the fwnode back to an OF node. On non-DT systems
these transports report no channel available.

This is a mechanical step towards firmware-node neutrality and prepares the
SCMI core for non-DT transports, such as an ACPI/PCC transport. DT users
continue to work unchanged; no non-DT transport is enabled by this patch.

Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Link: https://patch.msgid.link/20260915-acpi_scmi_pcc-v5-3-298579e9f359@kernel.org
Signed-off-by: Sudeep Holla <sudeep.holla@kernel.org>

0 files changed, 0 insertions, 0 deletions