libpayload: Add support for the CBMEM in memory console.

Change-Id: I1489b5306ef1ca078686fed4dba2d242f70ad941
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/1727
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>

payloads/libpayload/libc/console.c

@@ -57,6 +57,9 @@ void console_init(void)
 #ifdef CONFIG_PC_KEYBOARD
 	keyboard_init();
 #endif
+#ifdef CONFIG_CBMEM_CONSOLE
+	cbmem_console_init();
+#endif
 }
 
 static void device_putchar(unsigned char c)