tty: reorganize tty & serial menus

tty: reorganize tty & serial menus

Move LDISC_AUTOLOAD ahead of the Serial drivers menu.

Move the Serial drivers menu ahead of the Non-standard serial port
support menu.

Move NOZOMI out of the SERIAL_NONSTANDARD area since it does not
depend on SERIAL_NONSTANDARD and it breaks the SERIAL_NONSTANDARD
menu list.

Alphabetize the remaining drivers (in tty/Kconfig) by their prompt strings.
[The drivers in tty/hvc/Kconfig and tty/serial/Kconfig have not
been alphabetized.]

Cc: Jiri Slaby <jslaby@suse.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20200311225736.32147-4-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>