Revert "smc91x: fix build breakage from the SMC_GET_MAC_ADDR API upgrade"

This reverts commit 9e6db608, which was
merged without the API it needed, causing build breakage.

Reported-by: Bryan Wu <cooloney@kernel.org>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>