cdba: Distinguish between timeout before and after fastboot

Exit with error code 2 if a timeout occured before fastboot had finished
executing, to allow scripts to determine if the kernel timed out or if
the board didn't finish fastboot.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

cdba.c

@@ -677,7 +677,7 @@ int main(int argc, char **argv)
 	tty_reset(orig_tios);
 
 	if (reached_timeout)
-		return 110;
+		return fastboot_done ? 110 : 2;
 
 	return (quit || received_power_off) ? 0 : 1;
 }