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/arch/x86/include/asm/cb_sysinfo.h b/arch/x86/include/asm/cb_sysinfo.h
index 7590135..0201ac6 100644
--- a/arch/x86/include/asm/cb_sysinfo.h
+++ b/arch/x86/include/asm/cb_sysinfo.h
@@ -222,14 +222,14 @@
  * so.
  *
  * @info: Place to put the parsed information
- * @return 0 if OK, -ENOENT if no table found
+ * Return: 0 if OK, -ENOENT if no table found
  */
 int get_coreboot_info(struct sysinfo_t *info);
 
 /**
  * cb_get_sysinfo() - get a pointer to the parsed coreboot sysinfo
  *
- * @return pointer to sysinfo, or NULL if not available
+ * Return: pointer to sysinfo, or NULL if not available
  */
 const struct sysinfo_t *cb_get_sysinfo(void);