usb: husb: increase HUB_DEBOUNCE_TIMEOUT

Increase HUB_DEBOUNCE_TIMEOUT to 2000 because some usb device
needs around 1.5 or more to make the hub port status to be
connected steadily after being powered off and powered on.

These value is aligned with Linux driver and avoids to configure
"usb_pgood_delay" as a workaround for connection timeout on
some USB device; normally the env variable "usb_pgood_delay" is used
to delay the  first query after power ON and thus the device answer,
not to increase the connection timeout delay.

Commit-notes:
Hi,

I think this patch solves a general issue because a 1s timeout for
USB connection is too short on problematic USB keys.
The issue was introduced by the commit c998da0d67 ("usb: Change
power-on / scanning timeout handling")

Patch in usb_hub allow to avoid patch in each board/driver.

for example, commit 0417169054 ("imx: ventana: add usb_pgood_delay
2sec default") => use pgood_delay = 2s !?

("ARM: stm32: Increase USB power-good delay on DHSOM")
https://patchwork.ozlabs.org/project/uboot/patch/20211113022444.231801-1-marex@denx.de/

or commit 2bf352f0c1 ("usb: dwc2: Add delay to fix the USB
detection problem on SoCFPGA") => patch in USB DWC2 driver to add
a timeout in driver

the commit 319418c01c ("usb: hub: allow pgood_delay to be
specified via env") => introduce env variable for warm-up times

Patrick

END

Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Change-Id: I5eabf3f9fdbbaf763cd44e9c018cb5b74a0c65ac
Reviewed-on: https://gerrit.st.com/c/mpu/oe/st/u-boot/+/236836
Reviewed-by: CITOOLS <MDG-smet-aci-reviews@list.st.com>

common/usb_hub.c

@@ -47,7 +47,7 @@
 #define HUB_SHORT_RESET_TIME	20
 #define HUB_LONG_RESET_TIME	200
 
-#define HUB_DEBOUNCE_TIMEOUT	1000
+#define HUB_DEBOUNCE_TIMEOUT	2000
 
 #define PORT_OVERCURRENT_MAX_SCAN_COUNT		3