sh_eth: rename ARSTR register bit

The Renesas RZ/A1H manual names the software reset bit in the software reset
register (ARSTR) ARST which makes a bit more sense than the ARSTR_ARSTR name
used now  by the driver -- rename the latter to ARSTR_ARST.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/sh_eth.c

@@ -482,7 +482,7 @@ static void sh_eth_chip_reset(struct net_device *ndev)
 	struct sh_eth_private *mdp = netdev_priv(ndev);
 
 	/* reset device */
-	sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
+	sh_eth_tsu_write(mdp, ARSTR_ARST, ARSTR);
 	mdelay(1);
 }
 
@@ -540,7 +540,7 @@ static void sh_eth_chip_reset_r8a7740(struct net_device *ndev)
 	struct sh_eth_private *mdp = netdev_priv(ndev);
 
 	/* reset device */
-	sh_eth_tsu_write(mdp, ARSTR_ARSTR, ARSTR);
+	sh_eth_tsu_write(mdp, ARSTR_ARST, ARSTR);
 	mdelay(1);
 
 	sh_eth_select_mii(ndev);
@@ -735,7 +735,7 @@ static void sh_eth_chip_reset_giga(struct net_device *ndev)
 	}
 
 	/* reset device */
-	iowrite32(ARSTR_ARSTR, (void *)(SH_GIGA_ETH_BASE + 0x1800));
+	iowrite32(ARSTR_ARST, (void *)(SH_GIGA_ETH_BASE + 0x1800));
 	mdelay(1);
 
 	/* restore MAHR and MALR */

drivers/net/ethernet/renesas/sh_eth.h

@@ -394,7 +394,7 @@ enum RPADIR_BIT {
 #define DEFAULT_FDR_INIT	0x00000707
 
 /* ARSTR */
-enum ARSTR_BIT { ARSTR_ARSTR = 0x00000001, };
+enum ARSTR_BIT { ARSTR_ARST = 0x00000001, };
 
 /* TSU_FWEN0 */
 enum TSU_FWEN0_BIT {