sh_eth: rename PSR bits

In all the SoC manuals (except R-Car gen2) the PHY status register's name
is abbreviated to  PSR with the only valid bit 0 named LMON.  Follow the
suit and rename the corresponding *enum* tag/entry.
Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/sh_eth.c

@@ -1749,7 +1749,7 @@ static void sh_eth_emac_interrupt(struct net_device *ndev)
 		link_stat = sh_eth_read(ndev, PSR);
 		if (mdp->ether_link_active_low)
 			link_stat = ~link_stat;
-		if (!(link_stat & PHY_ST_LINK)) {
+		if (!(link_stat & PSR_LMON)) {
 			sh_eth_rcv_snd_disable(ndev);
 		} else {
 			/* Link Up */

drivers/net/ethernet/renesas/sh_eth.h

@@ -208,7 +208,7 @@ enum PIR_BIT {
 };
 
 /* PSR */
-enum PHY_STATUS_BIT { PHY_ST_LINK = 0x01, };
+enum PSR_BIT { PSR_LMON = 0x01, };
 
 /* EESR */
 enum EESR_BIT {