Fix a panic on i386 for drivers using MmAllocateContiguousMemory() and MmAllocateContiguousMemorySpecifyCache().
Fix a panic on i386 for drivers using MmAllocateContiguousMemory()
and MmAllocateContiguousMemorySpecifyCache().

Those two functions take 64-bit variable(s) for their arguments. On i386
that takes additional 32-bit variable per argument. This is required so
that windrv_wrap() can correctly wrap function that miniport driver calls
with stdcall convention. Similar explanation is provided in subr_ndis.c for
other functions.

Submitted by:	 Paul B Mahol <onemda at gmail.com>

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