Add PS; check to kenwood power up logic

https://github.com/Hamlib/Hamlib/issues/231

rigs/kenwood/kenwood.c

@@ -699,6 +699,17 @@ int kenwood_open(RIG *rig)
 
     err = kenwood_get_id(rig, id);
 
+    if (err == RIG_OK) { // some rigs give ID while in standby
+        powerstat_t powerstat = 0;
+        rig_debug(RIG_DEBUG_TRACE, "%s: got ID so try PS\n", __func__);
+        err = rig_get_powerstat(rig, &powerstat);
+        if (err == RIG_OK && powerstat == 0)
+        {
+            rig_debug(RIG_DEBUG_TRACE, "%s: got PS0 so powerup\n", __func__);
+            rig_set_powerstat(rig, 1);
+        }
+    }
+
     if (err == -RIG_ETIMEOUT)
     {
         // Ensure rig is on