zynqmp: pm: Added NODE_IPI_RPU_0 node definition in pm_defs

Nodes represent IPI dedicated to the RPU (not accessible by APU)
Signed-off-by: Mirela Simonovic <mirela.simonovic@aggios.com>

plat/xilinx/zynqmp/pm_service/pm_defs.h

@@ -143,6 +143,7 @@ enum pm_node_id {
 	NODE_IOPLL,
 	NODE_DDR,
 	NODE_IPI_APU,
+	NODE_IPI_RPU_0,
 };
 
 enum pm_request_ack {