stmmac: rename mac100 as dwmac100 and fix spare coding style

This patch renames the mac100.[ch] as dwmac100.[ch]; this
looks more specific and appropriate for these chip series.
The patch also fixes some spare coding style issues.
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/stmmac/Makefile

 obj-$(CONFIG_STMMAC_ETH) += stmmac.o
 stmmac-$(CONFIG_STMMAC_TIMER) += stmmac_timer.o
 stmmac-objs:= stmmac_main.o stmmac_ethtool.o stmmac_mdio.o dwmac_lib.o \
-		mac100.o  gmac.o $(stmmac-y)
+		dwmac100.o  gmac.o $(stmmac-y)

drivers/net/stmmac/common.h

@@ -225,7 +225,7 @@ struct mac_device_info {
 };
 
 struct mac_device_info *gmac_setup(unsigned long addr);
-struct mac_device_info *mac100_setup(unsigned long addr);
+struct mac_device_info *dwmac100_setup(unsigned long addr);
 
 extern void stmmac_set_mac_addr(unsigned long ioaddr, u8 addr[6],
 				unsigned int high, unsigned int low);

drivers/net/stmmac/stmmac_main.c

@@ -1585,7 +1585,7 @@ static int stmmac_mac_device_setup(struct net_device *dev)
 	if (priv->is_gmac)
 		device = gmac_setup(ioaddr);
 	else
-		device = mac100_setup(ioaddr);
+		device = dwmac100_setup(ioaddr);
 
 	if (!device)
 		return -ENOMEM;