Declare recovery and developer modes outside ChromeOS

Move the implementation for recovery and developer modes from
vendorcode/google/chromes to lib/.

Change-Id: I33335fb282de2c7bc613dc58d6912c47f3b5c06c
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/4308
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@google.com>

src/ec/google/chromeec/ec.c

@@ -19,6 +19,7 @@
 
 #include <stdint.h>
 #include <console/console.h>
+#include <bootmode.h>
 #include <arch/io.h>
 #include <delay.h>
 #include <arch/hlt.h>
@@ -31,7 +32,6 @@
 #endif
 #include "ec.h"
 #include "ec_commands.h"
-#include <vendorcode/google/chromeos/chromeos.h>
 
 uint8_t google_chromeec_calc_checksum(const uint8_t *data, int size)
 {