console uart: Fill coreboot table entries

Also fixes the reported baudrate to take get_option() into account.

Change-Id: Ieadad70b00df02a530b0ccb6fa4e1b51526089f3
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5310
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>

src/include/console/uart.h

@@ -46,7 +46,6 @@ unsigned char uart_rx_byte(void);
 int uart_can_rx_byte(void);
 
 unsigned int uart_platform_base(int idx);
-uint32_t uartmem_getbaseaddr(void);
 
 #if !defined(__ROMCC__)
 static inline void *uart_platform_baseptr(int idx)