spmi: Set fwnode for spmi devices

This allows fw_devlink to do proper dependency tracking for SPMI
devices. So, better deferred probe handling, async probing, async
suspend/resume, etc.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20241115230509.1793191-1-saravanak@google.com


Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20250116235339.300485-2-sboyd@kernel.org


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>