finetune first configuration

Config.in

@@ -38,7 +38,10 @@ source "target/config/Config.in.kernelversion"
 source "target/config/Config.in.toolchain"
 
 comment "changes made below do not require make cleandir after reconfiguration"
+depends on !ADK_CHOOSE_TARGET_ARCH && !ADK_CHOOSE_TARGET_SYSTEM
+
 menu "Target configuration"
+depends on !ADK_CHOOSE_TARGET_ARCH && !ADK_CHOOSE_TARGET_SYSTEM
 source "target/config/Config.in.qemuopts"
 source "target/config/Config.in.libc"
 source "target/config/Config.in.target"