amd: xgbe: fix duplicate #include of linux/phy.h

The header linux/phy.h was included twice, so delete one of them.
Signed-off-by: NJean Sacren <sakiwit@gmail.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/amd/xgbe/xgbe-drv.c

@@ -117,7 +117,6 @@
 #include <linux/spinlock.h>
 #include <linux/tcp.h>
 #include <linux/if_vlan.h>
-#include <linux/phy.h>
 #include <net/busy_poll.h>
 #include <linux/clk.h>
 #include <linux/if_ether.h>