Rename smp2p-modem to smp2p-mpss, and make the subnode labels of smp2p_adsp
and smp2p_slpi follow the <name>_smp2p_<out/in> layout.
Also move smp2p_slpi_out above smp2p_slpi_in to make it match mpss and adsp
where master-kernel is the first subnode.
This patch brings no functional change.
Signed-off-by: Yassine Oudjana <y.oudjana@xxxxxxxxxxxxxx>