pch_gbe: Move the OKI Semiconductor driver

Move the OKI Semiconductor driver into driver/net/ethernet/oki-semi/
and make the necessary Kconfig and Makefile changes.

Note: there is no documented maintainer for this driver, so I CC'd
the last 2 major contributors.

CC: Tomoya <tomoya-linux@dsn.okisemi.com>
CC: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 35ed4c2..0eaf957 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -32,6 +32,7 @@
 source "drivers/net/ethernet/myricom/Kconfig"
 source "drivers/net/ethernet/natsemi/Kconfig"
 source "drivers/net/ethernet/8390/Kconfig"
+source "drivers/net/ethernet/oki-semi/Kconfig"
 source "drivers/net/ethernet/pasemi/Kconfig"
 source "drivers/net/ethernet/qlogic/Kconfig"
 source "drivers/net/ethernet/racal/Kconfig"