config: node_sim can't be used with host_process

Otherwise we get this:

  ppsi/arch-unix/unix-startup.c:35: multiple definition of `main'
  wrc_main_sim.c:193: first defined here

(thanks randconfig)

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>

Kconfig

@@ -247,7 +247,7 @@ config VLAN_FOR_CLASS6
 	int "Route this VLAN too to fabric class 6 (Streamer/NIC)"
 
 config WR_NODE_SIM
-	depends on WR_NODE
+	depends on WR_NODE && !HOST_PROCESS
 	boolean "Build simple software for test of WR PTP Core in simulation"
 	default n
 	help