Convert CONFIG_ARCH_MISC_INIT to Kconfig

This converts the following to Kconfig:
   CONFIG_ARCH_MISC_INIT

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-mvebu/Kconfig b/arch/arm/mach-mvebu/Kconfig
index e0232b4..53117c4 100644
--- a/arch/arm/mach-mvebu/Kconfig
+++ b/arch/arm/mach-mvebu/Kconfig
@@ -9,6 +9,7 @@
 	select SPL_OF_CONTROL
 	select SPL_SIMPLE_BUS
 	select BOARD_EARLY_INIT_F
+	select ARCH_MISC_INIT
 
 config ARMADA_64BIT
 	bool