dts: s32g27a: pfe: add PFE slave driver entry example

commit  9c63480ed3aa5c23ef9b6c0ead8faa813650fbe2 from
https://source.codeaurora.org/external/autobsps32/linux



The example of PFE Master/Slave entries was added.
In fact that Master can reuse 'ordinary' pfe entry,
only additional property was necessary to add to
signal which HIF will be used for IHC communication.

More info can be found in PFE Linux UM.

Issue: ALB-6478
Signed-off-by: Jan Petrous <jan.petrous@nxp.com>
Signed-off-by: Meng Li <Meng.Li@windriver.com>