apps/nshlib: Never disable HELP and ?
diff --git a/nshlib/Kconfig b/nshlib/Kconfig
index c1974c5..d7c9c44 100644
--- a/nshlib/Kconfig
+++ b/nshlib/Kconfig
@@ -406,7 +406,7 @@
 
 config NSH_DISABLE_HELP
 	bool "Disable help"
-	default DEFAULT_SMALL
+	default n
 
 config NSH_DISABLE_ERROR_PRINT
 	bool "Disable NSH Error Printing"