Increase sleep during power on for Icom to wait for serial port to wake up

rigs/icom/icom.c

@@ -8130,7 +8130,7 @@ int icom_set_powerstat(RIG *rig, powerstat_t status)
         // sending more than enough 0xfe's to wake up the rs232
         write_block(&rs->rigport, fe_buf, fe_max);
         // need to wait a bit for RigPI and others to queue the echo
-        hl_usleep(200 * 1000);
+        hl_usleep(400 * 1000);
 
         // we'll try 0x18 0x01 now -- should work on STBY rigs too
         pwr_sc = S_PWR_ON;

rigs/icom/icom.h

@@ -35,7 +35,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20230728"
+#define BACKEND_VER "20230729"
 
 #define ICOM_IS_ID31 rig_is_model(rig, RIG_MODEL_ID31)
 #define ICOM_IS_ID51 rig_is_model(rig, RIG_MODEL_ID51)