chore(u5): update hal conf default

Signed-off-by: Frederic Pillon <[email protected]>

Author: fpistm

system/STM32U5xx/stm32u5xx_hal_conf_default.h

@@ -7,7 +7,7 @@
   ******************************************************************************
   * @attention
   *
-  * Copyright (c) 2021 STMicroelectronics.
+  * Copyright (c) 2021-2023 STMicroelectronics.
   * All rights reserved.
   *
   * This software is licensed under terms that can be found in the LICENSE file
@@ -150,7 +150,7 @@ extern "C" {
 vary depending on the variations in voltage and temperature.*/
 
 #if !defined  (LSI_STARTUP_TIMEOUT)
-#define LSI_STARTUP_TIMEOUT    130UL      /*!< Time out for LSI start up, in ms */
+#define LSI_STARTUP_TIMEOUT    130UL      /*!< Time out for LSI start up, in us */
 #endif /* LSI_STARTUP_TIMEOUT */
 
 /**