[SPARC32]: Revert IOMAP change eb98129eec7fa605f0407dfd92d40ee8ddf5cd9a
Breakage noted by Al Viro.
It breaks non-PCI builds, it's probably better to have a more
direct implementation on sparc32, and which driver actually
needs this is still questionable.
We can resolve this in 2.6.15
Signed-off-by: David S. Miller <davem@davemloft.net>