console: Split console_init()

Splitting the version prompt satisfies some requirements ROMCC
sets for the order in which we include source files. Also GDB
stub will need console hardware before entering main().

Change-Id: Ibb445a2f8cfb440d9dd69cade5f0ea41fb606f50
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5331
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/include/console/console.h

@@ -53,6 +53,7 @@ extern int console_loglevel;
 
 #ifndef __ROMCC__
 void console_init(void);
+void console_hw_init(void);
 void console_tx_byte(unsigned char byte);
 void console_tx_flush(void);
 void post_code(u8 value);