configs: stm32mp13: Increase usb_pgood_delay for ST boards

With some USB device, the current usb_pgood_delay value is not long
enough to ensure a correct detection.

Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
diff --git a/include/configs/stm32mp13_st_common.h b/include/configs/stm32mp13_st_common.h
index ad8126f..20ec114 100644
--- a/include/configs/stm32mp13_st_common.h
+++ b/include/configs/stm32mp13_st_common.h
@@ -9,7 +9,7 @@
 #define __CONFIG_STM32MP13_ST_COMMON_H__
 
 #define STM32MP_BOARD_EXTRA_ENV \
-	"usb_pgood_delay=1000\0" \
+	"usb_pgood_delay=2000\0" \
 	"console=ttySTM0\0"
 
 #include <configs/stm32mp13_common.h>