STM32L4 : correct ST HAL API call

- ll_utils: compilation issue
- GPIO: mode was not allowed by ST HAL API

Author: jeromecoutant

targets/TARGET_STM/TARGET_STM32L4/device/stm32l4xx_ll_utils.c

@@ -39,11 +39,6 @@
 #include "stm32l4xx_ll_rcc.h"
 #include "stm32l4xx_ll_system.h"
 #include "stm32l4xx_ll_pwr.h"
-#ifdef  USE_FULL_ASSERT
-#include "stm32_assert.h"
-#else
-#define assert_param(expr) ((void)0U)
-#endif
 
 /** @addtogroup STM32L4xx_LL_Driver
   * @{

targets/TARGET_STM/TARGET_STM32L4/gpio_irq_api.c

@@ -304,7 +304,7 @@ void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
                 mode = STM_MODE_IT_FALLING;
                 obj->event = EDGE_FALL;
             } else { // NONE or RISE
-                mode = STM_MODE_IT_EVT_RESET;
+                mode = STM_MODE_INPUT;
                 obj->event = EDGE_NONE;
             }
         }
@@ -313,7 +313,7 @@ void gpio_irq_set(gpio_irq_t *obj, gpio_irq_event event, uint32_t enable)
                 mode = STM_MODE_IT_RISING;
                 obj->event = EDGE_RISE;
             } else { // NONE or FALL
-                mode = STM_MODE_IT_EVT_RESET;
+                mode = STM_MODE_INPUT;
                 obj->event = EDGE_NONE;
             }
         }