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/microcode.h b/arch/x86/include/asm/microcode.h
index 4ab7504..09652b9 100644
--- a/arch/x86/include/asm/microcode.h
+++ b/arch/x86/include/asm/microcode.h
@@ -17,7 +17,7 @@
  *
  * Applies any microcode updates in the device tree.
  *
- * @return 0 if OK, -EEXIST if the updates were already applied, -ENOENT if
+ * Return: 0 if OK, -EEXIST if the updates were already applied, -ENOENT if
  * not updates were found, -EINVAL if an update was invalid
  */
 int microcode_update_intel(void);
@@ -27,7 +27,7 @@
  *
  * This reads the microcode version of the currently running CPU
  *
- * @return microcode version number
+ * Return: microcode version number
  */
 int microcode_read_rev(void);
 #endif /* __ASSEMBLY__ */