allow to choose kernel symbol

target/linux/config/Config.in.block

@@ -1,12 +1,12 @@
 # This file is part of the OpenADK project. OpenADK is copyrighted
 # material, please see the LICENCE file in the top-level directory.
 
-menu "Block devices support"
-depends on ADK_TARGET_WITH_BLOCK
-
 config ADK_KERNEL_BLOCK
 	bool
 
+menu "Block devices support"
+depends on ADK_TARGET_WITH_BLOCK
+
 config ADK_KERNEL_LBDAF
 	bool