drivers/clock_control: stm32: Fix default value for AHB prescaler

Default AHB presacler value was set to 0 which is not an allowed
value. Set it to 1 and limit range from 1 to 512.

Signed-off-by: Erwan Gouriou <[email protected]>

Author: erwango

drivers/clock_control/Kconfig.stm32

@@ -382,8 +382,8 @@ endif # SOC_SERIES_STM32L4X
 
 config CLOCK_STM32_AHB_PRESCALER
 	int "AHB prescaler"
-	default 0
-	range 0 512
+	default 1
+	range 1 512
 	help
 	  AHB prescaler, allowed values: 1, 2, 4, 8, 16, 64, 128,
 	  256, 512.