fix(90kernel-modules): add watchdog drivers for generic initrd

fix(90kernel-modules): add watchdog drivers for generic initrd

The watchdog module pulls in the device specific watchdog if that
module is enabled, but in the case where we need a generic initrd
we don't get all watchdog drivers which means if we have a watchdog
enabled for that usecase it may get kicked too late in the boot
process so we need the drivers in the initrd for the generic case too.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>