scripts/nsdeps: get 'make nsdeps' working again

Since commit cdd30eb ("module: Convert symbol namespace to string
literal"), when MODULE_IMPORT_NS() is missing, 'make nsdeps' inserts
pointless code:

    MODULE_IMPORT_NS("ns");

Here, "ns" is not a namespace, but the variable in the semantic patch.
It must not be quoted. Instead, a string literal must be passed to
Coccinelle.

Fixes: cdd30eb ("module: Convert symbol namespace to string literal")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

scripts/coccinelle/misc/add_namespace.cocci

@@ -13,7 +13,7 @@ virtual report
 declarer name MODULE_IMPORT_NS;
 identifier virtual.ns;
 @@
-MODULE_IMPORT_NS("ns");
+MODULE_IMPORT_NS(ns);
 
 // Add missing imports, but only adjacent to a MODULE_LICENSE statement.
 // That ensures we are adding it only to the main module source file.
@@ -23,7 +23,7 @@ expression license;
 identifier virtual.ns;
 @@
 MODULE_LICENSE(license);
-+ MODULE_IMPORT_NS("ns");
++ MODULE_IMPORT_NS(ns);
 
 // Dummy rule for report mode that would otherwise be empty and make spatch
 // fail ("No rules apply.")

scripts/nsdeps

@@ -21,7 +21,7 @@ fi
 
 generate_deps_for_ns() {
 	$SPATCH --very-quiet --in-place --sp-file \
-		$srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=$1 $2
+		$srctree/scripts/coccinelle/misc/add_namespace.cocci -D nsdeps -D ns=\"$1\" $2
 }
 
 generate_deps() {