The mc-bus specific field, fsl_mc in struct msi_desc is missing its
comment so add it.
Signed-off-by: NLaurentiu Tudor <laurentiu.tudor@nxp.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>