MiDereferenceImports needs to be implemented

I'm trying to get PORTCLS.SYS, KS.SYS and some test WDM audio drivers to load.

PORTCLS.SYS and KS.SYS are basically helper libraries, used by such drivers.

Without either of these being linked to, I am able to load my test driver. However as soon as it is linked to either of the above, ReactOS fails to load the driver, with the following debug output:

NtLoadDriver('\Registry\Machine\System\CurrentControlSet\Services\mpu401')
(ntoskrnl/io/iomgr/driver.c:1583) FullImagePath: '\SystemRoot\system32\drivers\mpu401.sys'
(ntoskrnl/io/iomgr/driver.c:1584) Type: 1
(ntoskrnl/io/iomgr/driver.c:104) IopGetDriverObject(86CC4AC8 'mpu401' 0)
(ntoskrnl/io/iomgr/driver.c:123) Driver name: '\Driver\mpu401'
(ntoskrnl/io/iomgr/driver.c:138) Failed to reference driver object, status=0xc0000034
(ntoskrnl/mm/sysldr.c:188) Imports not dereferenced!
(ntoskrnl/mm/sysldr.c:188) Imports not dereferenced!
(ntoskrnl/io/iomgr/driver.c:1616) MmLoadSystemImage() failed (Status c0000034)