Add conditional logic so that people who use F1 don't have to be bother with...

Add conditional logic so that people who use F1 don't have to be bother with meaningless RTC MAGIC settings

arch/arm/src/stm32/Kconfig

@@ -746,6 +746,7 @@ config STM32_STM32F10XX
 	default n
 	select STM32_HAVE_SPI2 if STM32_HIGHDENSITY || STM32_MEDIUMDENSITY
 	select STM32_HAVE_SPI3 if STM32_HIGHDENSITY || STM32_MEDIUMDENSITY
+	select STM32_HAVE_RTC_COUNTER
 
 config STM32_VALUELINE
 	bool
@@ -3402,6 +3403,10 @@ config STM32_SAVE_CRASHDUMP
 
 endif # STM32_BKPSRAM
 
+config STM32_HAVE_RTC_COUNTER
+	bool
+	default n
+
 config STM32_HAVE_RTC_SUBSECONDS
 	bool
 	default n
@@ -3410,12 +3415,12 @@ config RTC_MAGIC_REG
 	int "The BKP register used to store/check the Magic value to determine if RTC is set already"
 	default 0
 	range  0 19
-	depends on RTC
+	depends on RTC && !STM32_HAVE_RTC_COUNTER
 
 config RTC_MAGIC
 	hex "Value used as Magic to determine if RTC is set already"
 	default 0xfacefeee
-	depends on RTC
+	depends on RTC && !STM32_HAVE_RTC_COUNTER
 
 choice
 	prompt "RTC clock source"