serial: dz: Enable modular build

Enable modular build since the driver now has a proper module_exit()
handler.  There's nothing specific to DZ hardware to prevent driver
unloading and reloading from working.

Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk>
Link: https://patch.msgid.link/alpine.DEB.2.21.2605062331420.46195@angie.orcam.me.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 9aa61c93d7bc6d164b9c493f140477b793ca8afe..ec284aceb9093a10998a8654df74099ec0bdc282 100644 (file)
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -334,7 +334,7 @@ config SERIAL_MAX310X
          Say Y here if you want to support this ICs.
 
 config SERIAL_DZ
-       bool "DECstation DZ serial driver"
+       tristate "DECstation DZ serial driver"
        depends on MACH_DECSTATION && 32BIT
        select SERIAL_CORE
        default y