kconfig: move lxdialog to scripts/kconfig/lxdialog

The only lxdialog user i kconfig - for menuconfig.
So move it to reflect this.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 9d67782..55bf955 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -11,7 +11,7 @@
 	$< arch/$(ARCH)/Kconfig
 
 menuconfig: $(obj)/mconf
-	$(Q)$(MAKE) $(build)=scripts/lxdialog
+	$(Q)$(MAKE) $(build)=scripts/kconfig/lxdialog
 	$< arch/$(ARCH)/Kconfig
 
 config: $(obj)/conf
@@ -115,6 +115,7 @@
 
 clean-files	:= lkc_defs.h qconf.moc .tmp_qtcheck \
 		   .tmp_gtkcheck zconf.tab.c lex.zconf.c zconf.hash.c
+subdir- += lxdialog
 
 # Needed for systems without gettext
 KBUILD_HAVE_NLS := $(shell \