rename symbol: CONFIG_STM32 -> CONFIG_ARCH_STM32

Have this symbol follow the pattern of all other such symbols.

Signed-off-by: Trevor Woerner <twoerner@gmail.com>
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 7664027..81ed9eb 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -310,7 +310,7 @@
 
 config STM32_RCC
 	bool "Enable RCC driver for the STM32 SoC's family"
-	depends on (STM32 || ARCH_STM32MP) && MISC
+	depends on (ARCH_STM32 || ARCH_STM32MP) && MISC
 	help
 	  Enable the STM32 RCC driver. The RCC block (Reset and Clock Control
 	  block) is responsible of the management of the clock and reset