[HAL][SAI] HAL code quality enhancement for MISRA-C Rule-8.13 by adding const qualifiers

Inc/stm32l4xx_hal_sai.h

diff --git a/Inc/stm32l4xx_hal_sai.h b/Inc/stm32l4xx_hal_sai.h
index b36604a..f17bef0 100644
--- a/Inc/stm32l4xx_hal_sai.h
+++ b/Inc/stm32l4xx_hal_sai.h
@@ -832,8 +832,8 @@
   * @{
   */
 /* Peripheral State functions  ************************************************/
-HAL_SAI_StateTypeDef HAL_SAI_GetState(SAI_HandleTypeDef *hsai);
-uint32_t HAL_SAI_GetError(SAI_HandleTypeDef *hsai);
+HAL_SAI_StateTypeDef HAL_SAI_GetState(const SAI_HandleTypeDef *hsai);
+uint32_t HAL_SAI_GetError(const SAI_HandleTypeDef *hsai);
 /**
   * @}
   */

Inc/stm32l4xx_hal_sai_ex.h

diff --git a/Inc/stm32l4xx_hal_sai_ex.h b/Inc/stm32l4xx_hal_sai_ex.h
index cbd6e38..10fcc9e 100644
--- a/Inc/stm32l4xx_hal_sai_ex.h
+++ b/Inc/stm32l4xx_hal_sai_ex.h
@@ -72,7 +72,8 @@
 /** @addtogroup SAIEx_Exported_Functions_Group1 Peripheral Control functions
   * @{
   */
-HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(SAI_HandleTypeDef *hsai, SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay);
+HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(const SAI_HandleTypeDef *hsai,
+                                              const SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay);
 /**
   * @}
   */

Src/stm32l4xx_hal_sai.c

diff --git a/Src/stm32l4xx_hal_sai.c b/Src/stm32l4xx_hal_sai.c
index f13aac6..46f9abb 100644
--- a/Src/stm32l4xx_hal_sai.c
+++ b/Src/stm32l4xx_hal_sai.c
@@ -2159,7 +2159,7 @@
   *              the configuration information for SAI module.
   * @retval HAL state
   */
-HAL_SAI_StateTypeDef HAL_SAI_GetState(SAI_HandleTypeDef *hsai)
+HAL_SAI_StateTypeDef HAL_SAI_GetState(const SAI_HandleTypeDef *hsai)
 {
   return hsai->State;
 }
@@ -2170,7 +2170,7 @@
   *              the configuration information for the specified SAI Block.
   * @retval SAI Error Code
   */
-uint32_t HAL_SAI_GetError(SAI_HandleTypeDef *hsai)
+uint32_t HAL_SAI_GetError(const SAI_HandleTypeDef *hsai)
 {
   return hsai->ErrorCode;
 }

Src/stm32l4xx_hal_sai_ex.c

diff --git a/Src/stm32l4xx_hal_sai_ex.c b/Src/stm32l4xx_hal_sai_ex.c
index 9c9e0ae..5abdfac 100644
--- a/Src/stm32l4xx_hal_sai_ex.c
+++ b/Src/stm32l4xx_hal_sai_ex.c
@@ -75,7 +75,8 @@
   * @param  pdmMicDelay Microphone delays configuration.
   * @retval HAL status
   */
-HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(SAI_HandleTypeDef *hsai, SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay)
+HAL_StatusTypeDef HAL_SAIEx_ConfigPdmMicDelay(const SAI_HandleTypeDef *hsai,
+                                              const SAIEx_PdmMicDelayParamTypeDef *pdmMicDelay)
 {
   HAL_StatusTypeDef status = HAL_OK;
   uint32_t offset;