* i386-linux-nat.c (i386_linux_dr_get): Change type of return

* i386-linux-nat.c (i386_linux_dr_get): Change type of return
value to `unsigned long'.  Change type of `value' to `unsigned
long'.
(i386_linux_dr_set): Change type of second argument to `unsigned
long'.
(i386_linux_dr_set_control): Change type of first argument to
`unsigned long'.
(i386_linux_dr_get_status): Change type of return value to
unsigned long.
* config/i386/nm-linux.h (i386_linux_dr_set_control,
i386_linux_dr_get_status): Adjust prototypes accordingly.