remoteproc: zynqmp_r5: Update set RPU mode for Versal-Net and attach use case

commit 3fd4a27a1acc27791a8dac9646dbd06dd96befc8 from
https://github.com/Xilinx/linux-xlnx.git

 xlnx_rebase_v6.1

In case of RPU being up already, which is applicable if rproc state is
RPROC_DETACHED, then do not attempt to configure the already running
RPU.

Versal-Net RPU clusters do not have register which allows setting of
TCM configuration so disable that feature for Versal-Net.

Signed-off-by: Ben Levinsky <ben.levinsky@amd.com>
Reviewed-by: Tanmay Shah <tanmay.shah@amd.com>
State: pending
Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>