lib/hardwaremain: Add \n to "Boot failed" message

Change-Id: I106fccd725a5c944f4e8e0f196b31c9344f588c7
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/14984
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/lib/hardwaremain.c

@@ -227,7 +227,7 @@ static boot_state_t bs_payload_boot(void *arg)
 {
 	payload_run();
 
-	printk(BIOS_EMERG, "Boot failed");
+	printk(BIOS_EMERG, "Boot failed\n");
 	/* Returning from this state will fail because the following signals
 	 * return to a completed state. */
 	return BS_PAYLOAD_BOOT;