[HAL][EXTI] Fix computation of pExtiConfig->GPIOSel in HAL_EXTI_GetConfigLine()

Src/stm32g0xx_hal_exti.c

diff --git a/Src/stm32g0xx_hal_exti.c b/Src/stm32g0xx_hal_exti.c
index b13cef3..27c83a7 100644
--- a/Src/stm32g0xx_hal_exti.c
+++ b/Src/stm32g0xx_hal_exti.c
@@ -343,7 +343,7 @@
       assert_param(IS_EXTI_GPIO_PIN(linepos));
 
       regval = EXTI->EXTICR[linepos >> 2u];
-      pExtiConfig->GPIOSel = ((regval << (EXTI_EXTICR1_EXTI1_Pos * (3uL - (linepos & 0x03u)))) >> 24);
+      pExtiConfig->GPIOSel = (regval >> (EXTI_EXTICR1_EXTI1_Pos * (linepos & 0x03u))) & EXTI_EXTICR1_EXTI0;
     }
   }