ext/hal: stm32cube: STM32L4: Enable legacy CAN API

A new CAN API has been delivered on recent L4 stm32cube.
This new API breaks current CAN driver. Disable the new API and
enable the legacy API.

Fixes #8931

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>

ext/hal/st/stm32cube/stm32l4xx/CMakeLists.txt

@@ -7,7 +7,7 @@ zephyr_sources(drivers/src/stm32l4xx_hal.c)
 zephyr_sources(drivers/src/stm32l4xx_hal_rcc.c)
 zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_ADC drivers/src/stm32l4xx_hal_adc.c)
 zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_ADC_EX drivers/src/stm32l4xx_hal_adc_ex.c)
-zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_CAN drivers/src/stm32l4xx_hal_can.c)
+zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_CAN drivers/src/Legacy/stm32l4xx_hal_can.c)
 zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_COMP drivers/src/stm32l4xx_hal_comp.c)
 zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_CORTEX drivers/src/stm32l4xx_hal_cortex.c)
 zephyr_sources_ifdef(CONFIG_USE_STM32_HAL_CRC drivers/src/stm32l4xx_hal_crc.c)

ext/hal/st/stm32cube/stm32l4xx/README

@@ -43,3 +43,14 @@ Patch List:
     Impacted files:
      ext/hal/st/stm32cube/stm32l4xx/drivers/include/stm32l4xx_ll_pwr.h
     ST Bug tracker ID: 47844
+
+
+   *Disable new CAN API and enable Legacy API
+     A new CAN API has been delivered on recent L4 stm32cube.
+     This new API breaks current CAN driver. Disable the new API and enable the
+     legacy API.
+     Disable related systematic warning message
+    Impacted files:
+     CMakeLists.txt
+     drivers/include/stm32l4xx_hal_conf.h
+     drivers/src/Legacy/stm32l4_hal_can.c

ext/hal/st/stm32cube/stm32l4xx/drivers/include/stm32l4xx_hal_conf.h

@@ -52,8 +52,8 @@
   */
 #define HAL_MODULE_ENABLED
 #define HAL_ADC_MODULE_ENABLED
-#define HAL_CAN_MODULE_ENABLED
-/* #define HAL_CAN_LEGACY_MODULE_ENABLED */
+/* #define HAL_CAN_MODULE_ENABLED */
+#define HAL_CAN_LEGACY_MODULE_ENABLED
 #define HAL_COMP_MODULE_ENABLED
 #define HAL_CORTEX_MODULE_ENABLED
 #define HAL_CRC_MODULE_ENABLED