usb: kbd: Do not deregister usbkbd twice when using dm

The dm usb_kbd_remove function() will deregister the usb keyboard for
us on a "usb reset" / "usb stop" so there is no need to manually call
usb_kbd_deregister() in the dm case.

This commit removes usb_kbd_deregister() in the dm case fixing the
following "usb reset" errors:

usb_kbd_remove: warning, ret=-6
device_remove: Device 'usb_kbd' failed to remove, but children are gone

Signed-off-by: Hans de Goede <hdegoede@redhat.com>

cmd/usb.c

@@ -541,7 +541,7 @@ static int do_usbboot(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 
 static int do_usb_stop_keyboard(int force)
 {
-#ifdef CONFIG_USB_KEYBOARD
+#if !defined CONFIG_DM_USB && defined CONFIG_USB_KEYBOARD
 	if (usb_kbd_deregister(force) != 0) {
 		printf("USB not stopped: usbkbd still using USB\n");
 		return 1;

common/usb_kbd.c

@@ -566,7 +566,6 @@ int drv_usb_kbd_init(void)
 	/* No USB Keyboard found */
 	return -1;
 }
-#endif
 
 /* Deregister the keyboard. */
 int usb_kbd_deregister(int force)
@@ -599,6 +598,8 @@ int usb_kbd_deregister(int force)
 #endif
 }
 
+#endif
+
 #ifdef CONFIG_DM_USB
 
 static int usb_kbd_probe(struct udevice *dev)