console: Refactor uart8250/NE2K

Do this for symmetry with romstage_console.c.

Change-Id: If17acfc3da07b1dbefa87162c3c7168deb7b354a
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5330
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/include/console/ne2k.h

@@ -22,4 +22,8 @@
 void ne2k_append_data(unsigned char *d, int len, unsigned int base);
 int ne2k_init(unsigned int eth_nic_base);
 void ne2k_transmit(unsigned int eth_nic_base);
+
+#ifndef __ROMCC__
+#define ne2k_append_data_byte(d, base) ne2k_append_data(&d, 1, base)
+#endif
 #endif /* _NE2K_H */