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/e820.h b/arch/x86/include/asm/e820.h
index 850a0a7..1ab709a 100644
--- a/arch/x86/include/asm/e820.h
+++ b/arch/x86/include/asm/e820.h
@@ -34,7 +34,7 @@
  *
  * @max_entries: Maximum number of entries to write
  * @entries: Place to put entires
- * @return number of entries written
+ * Return: number of entries written
  */
 unsigned int cb_install_e820_map(unsigned int max_entries,
 				 struct e820_entry *entries);