net: nixge: Address compiler warnings when building for i386

Address compiler warning reported by kbuild autobuilders
when building for i386 as a result of dma_addr_t size on
different architectures.

warning: cast to pointer from integer of different size
	[-Wint-to-pointer-cast]

Fixes: 7e8d5755be0e ("net: nixge: Add support for 64-bit platforms")
Signed-off-by: Moritz Fischer <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
1 file changed