[smc9000] Avoid using CONFIG as a preprocessor macro

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/net/smc9000.c

 
    /* is it using AUI or 10BaseT ? */
    SMC_SELECT_BANK(nic->ioaddr, 1);
-   if (inw(nic->ioaddr + CONFIG) & CFG_AUI_SELECT)
+   if (inw(nic->ioaddr + CFG) & CFG_AUI_SELECT)
      media = 2;
    else
      media = 1;
    /* Select which interface to use */
    SMC_SELECT_BANK(nic->ioaddr, 1);
    if ( media == 1 ) {
-      _outw( inw( nic->ioaddr + CONFIG ) & ~CFG_AUI_SELECT,
-	   nic->ioaddr + CONFIG );
+      _outw( inw( nic->ioaddr + CFG ) & ~CFG_AUI_SELECT,
+	   nic->ioaddr + CFG );
    }
    else if ( media == 2 ) {
-      _outw( inw( nic->ioaddr + CONFIG ) | CFG_AUI_SELECT,
-	   nic->ioaddr + CONFIG );
+      _outw( inw( nic->ioaddr + CFG ) | CFG_AUI_SELECT,
+	   nic->ioaddr + CFG );
    }
 
    smc_phy_configure(nic->ioaddr);

src/drivers/net/smc9000.h

 #define RPC_DEFAULT (RPC_ANEG | (RPC_LED_100 << RPC_LSXA_SHFT) | (RPC_LED_FD << RPC_LSXB_SHFT) | RPC_SPEED | RPC_DPLX)
 
 /* BANK 1 */
-#define CONFIG			0
+#define CFG			0
 #define CFG_AUI_SELECT		0x100
 #define	BASE			2
 #define	ADDR0			4