secmon: allow for serial console

Add necessary checks and objects for secmon serial console.

Change-Id: Ibafa19061255ef6847a424922565a866328ff34c
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10197
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins)

src/include/console/uart.h

@@ -57,7 +57,7 @@ void oxford_remap(unsigned int new_base);
 
 #define __CONSOLE_SERIAL_ENABLE__	CONFIG_CONSOLE_SERIAL && \
 	(ENV_BOOTBLOCK || ENV_ROMSTAGE || ENV_RAMSTAGE || ENV_VERSTAGE || \
-	(ENV_SMM && CONFIG_DEBUG_SMI))
+	ENV_SECMON || (ENV_SMM && CONFIG_DEBUG_SMI))
 
 #if __CONSOLE_SERIAL_ENABLE__
 static inline void __uart_init(void)		{ uart_init(CONFIG_UART_FOR_CONSOLE); }