ETHOC: fix build breakage on s390

Let driver depend on HAS_IOMEM to avoid build breakage on s390:

  CC      drivers/net/ethoc.o
drivers/net/ethoc.c: In function 'ethoc_read':
drivers/net/ethoc.c:221: error: implicit declaration of function 'ioread32'
drivers/net/ethoc.c: In function 'ethoc_write':
drivers/net/ethoc.c:226: error: implicit declaration of function 'iowrite32'
drivers/net/ethoc.c: In function 'ethoc_rx':
drivers/net/ethoc.c:405: error: implicit declaration of function 'memcpy_fromio'
drivers/net/ethoc.c: In function 'ethoc_start_xmit':
drivers/net/ethoc.c:828: error: implicit declaration of function 'memcpy_toio'

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index f062b424704e..c99ee38f952e 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -974,7 +974,7 @@ config ENC28J60_WRITEVERIFY
 
 config ETHOC
         tristate "OpenCores 10/100 Mbps Ethernet MAC support"
-        depends on NET_ETHERNET
+        depends on NET_ETHERNET && HAS_IOMEM
         select MII
         select PHYLIB
         help