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>

scripts/dtc/srcpos.h

@@ -52,7 +52,7 @@ extern struct srcfile_state *current_srcfile; /* = NULL */
  * @param fullnamep	If non-NULL, it is set to the allocated filename of the
  *			file that was opened. The caller is then responsible
  *			for freeing the pointer.
- * @return pointer to opened FILE
+ * Return: pointer to opened FILE
  */
 FILE *srcfile_relative_open(const char *fname, char **fullnamep);