icnss2: Synchronize qmi server arrive with co-processor up

WLAN RFA is present in another co-processor subsystem.
In order to prevent unclocked access, Wait for SLATE_POWER_UP
event before starting wlan cold boot qmi handshakes.

Change-Id: If24816c270c32c5f0191227ef66bc4a31549c54d

icnss2/debug.c

@@ -419,6 +419,9 @@ static int icnss_stats_show_state(struct seq_file *s, struct icnss_priv *priv)
 			continue;
 		case ICNSS_SLATE_SSR_REGISTERED:
 			seq_puts(s, "SLATE SSR REGISTERED");
+			continue;
+		case ICNSS_SLATE_UP:
+			seq_puts(s, "ICNSS SLATE UP");
 		}
 
 		seq_printf(s, "UNKNOWN-%d", i);