e1000: Explicitly power up the PHY during loopback testing.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index bd7770f..b2caaa2 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -484,7 +484,7 @@
  *
  **/
 
-static void e1000_power_up_phy(struct e1000_adapter *adapter)
+void e1000_power_up_phy(struct e1000_adapter *adapter)
 {
 	uint16_t mii_reg = 0;