system(H5): update STM32C0xx hal default config

Allow some redefinition.

Signed-off-by: Frederic Pillon <frederic.pillon@st.com>

Author: fpistm

system/STM32H5xx/stm32h5xx_hal_conf_default.h

@@ -180,10 +180,18 @@ in voltage and temperature.*/
 /**
   * @brief This is the HAL system configuration section
   */
+#if !defined (VDD_VALUE)
 #define  VDD_VALUE                  3300UL /*!< Value of VDD in mv */
+#endif
+#if !defined (TICK_INT_PRIORITY)
 #define  TICK_INT_PRIORITY          ((1UL<<__NVIC_PRIO_BITS) - 1UL)  /*!< tick interrupt priority (lowest by default) */
+#endif
+#if !defined (USE_RTOS)
 #define  USE_RTOS                   0U
+#endif
+#if !defined (PREFETCH_ENABLE)
 #define  PREFETCH_ENABLE            0U               /*!< Enable prefetch */
+#endif
 
 /* ############################################ Assert Selection #################################################### */
 /**