Once the inb()/outb() helpers become conditional, the newly added driver
fails to link on targets without CONFIG_HAS_IOPORT:

In file included from arch/arm64/include/asm/io.h:299,
                 from include/linux/io.h:14,
                 from drivers/watchdog/lenovo_se10_wdt.c:8:
drivers/watchdog/lenovo_se10_wdt.c: In function 'set_bram':
include/asm-generic/io.h:596:15: error: call to '_outb' declared with attribute error: outb() requires CONFIG_HAS_IOPORT
  596 | #define _outb _outb
include/asm-generic/io.h:655:14: note: in expansion of macro '_outb'
  655 | #define outb _outb
      |              ^~~~~
drivers/watchdog/lenovo_se10_wdt.c:67:9: note: in expansion of macro 'outb'
   67 |         outb(offset, bram_base);
      |         ^~~~

Add the same dependency we added to the other such drivers.

Fixes: 1f6602c8 ("watchdog: lenovo_se10_wdt: Watchdog driver for Lenovo SE10 platform")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by Mark Pearson <mpearson-lenovo@squebb.ca>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240528120759.3491774-1-arnd@kernel.orgSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>