watchdog: mpc8xxx: Remove unneeded linux/miscdevice.h include

watchdog/mpc8xxx_wdt.c does not use any miscdevice so this patch remove
this unnecessary inclusion.

Signed-off-by: Corentin Labbe <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
1 file changed