doc: replace @return by Return:

Sphinx expects Return: and not @return to indicate a return value.

find . -name '*.c' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

find . -name '*.h' -exec \
sed -i 's/^\(\s\)\*\(\s*\)@return\(\s\)/\1*\2Return:\3/' {} \;

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
diff --git a/scripts/dtc/srcpos.c b/scripts/dtc/srcpos.c
index cb6ed0e..c297861 100644
--- a/scripts/dtc/srcpos.c
+++ b/scripts/dtc/srcpos.c
@@ -66,7 +66,7 @@
  * @param dirname	Directory to look in, or NULL for none
  * @param fname		Filename to look for
  * @param fp		Set to NULL if file did not open
- * @return allocated filename on success (caller must free), NULL on failure
+ * Return: allocated filename on success (caller must free), NULL on failure
  */
 static char *try_open(const char *dirname, const char *fname, FILE **fp)
 {
@@ -93,7 +93,7 @@
  *
  * @param fname	Filename to open
  * @param fp	Returns pointer to opened FILE, or NULL on failure
- * @return pointer to allocated filename, which caller must free
+ * Return: pointer to allocated filename, which caller must free
  */
 static char *fopen_any_on_path(const char *fname, FILE **fp)
 {