udelay: move into platform folder

Change-Id: I9910cd1f5850a6f86e26bb1dc4ff26614f0a0964
Signed-off-by: Antonio Vázquez Blanco <antoniovazquezblanco@gmail.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/88270
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

include/platform/udelay.h

@@ -0,0 +1,23 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright 2025 Antonio Vázquez Blanco <antoniovazquezblanco@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __UDELAY_H__
+#define __UDELAY_H__
+
+void internal_sleep(unsigned int usecs);
+void default_delay(unsigned int usecs);
+
+#endif