usb: hub: introduce HUB_DEBOUNCE_TIMEOUT

Introduce define for connection timeout, named HUB_DEBOUNCE_TIMEOUT
as in linux kernel drivers/usb/core/hub.c

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/common/usb_hub.c b/common/usb_hub.c
index ba11a18..d736389 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -47,6 +47,8 @@
 #define HUB_SHORT_RESET_TIME	20
 #define HUB_LONG_RESET_TIME	200
 
+#define HUB_DEBOUNCE_TIMEOUT	1000
+
 #define PORT_OVERCURRENT_MAX_SCAN_COUNT		3
 
 struct usb_device_scan {
@@ -208,10 +210,10 @@
 	 * will be done based on this value in the USB port loop in
 	 * usb_hub_configure() later.
 	 */
-	hub->connect_timeout = hub->query_delay + 1000;
+	hub->connect_timeout = hub->query_delay + HUB_DEBOUNCE_TIMEOUT;
 	debug("devnum=%d poweron: query_delay=%d connect_timeout=%d\n",
 	      dev->devnum, max(100, (int)pgood_delay),
-	      max(100, (int)pgood_delay) + 1000);
+	      max(100, (int)pgood_delay) + HUB_DEBOUNCE_TIMEOUT);
 }
 
 #if !CONFIG_IS_ENABLED(DM_USB)