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/include/relocate.h b/include/relocate.h
index 26682da..2dbfd90 100644
--- a/include/relocate.h
+++ b/include/relocate.h
@@ -16,7 +16,7 @@
 /**
  * copy_uboot_to_ram() - Copy U-Boot to its new relocated position
  *
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int copy_uboot_to_ram(void);
 
@@ -25,7 +25,7 @@
  *
  * This clears the memory used by global variables
  *
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int clear_bss(void);
 
@@ -35,7 +35,7 @@
  * This processes the relocation tables to ensure that the code can run in its
  * new location.
  *
- * @return 0 if OK, -ve on error
+ * Return: 0 if OK, -ve on error
  */
 int do_elf_reloc_fixups(void);
 
@@ -46,7 +46,7 @@
  * which need to manually relocate some things.
  *
  * @ptr: Pointer to relocate
- * @return new pointer value
+ * Return: new pointer value
  */
 static inline void *manual_reloc(void *ptr)
 {