drivers/pc80/rtc: Reorganize prototypes

Change-Id: Idea18f437c31ebe83dd61a185e614106a1f8f976
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38199
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

src/include/post.h

@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
+
+#ifndef __POST_H__
+#define __POST_H__
+
+#include <stdint.h>
+#include <device/device.h>
+
+void cmos_post_init(void);
+void cmos_post_code(u8 value);
+void cmos_post_extra(u32 value);
+void cmos_post_path(const struct device *dev);
+int cmos_post_previous_boot(u8 *code, u32 *extra);
+
+static inline void post_log_path(const struct device *dev)
+{
+	if (CONFIG(CMOS_POST) && dev)
+		cmos_post_path(dev);
+}
+
+static inline void post_log_clear(void)
+{
+	if (CONFIG(CMOS_POST))
+		cmos_post_extra(0);
+}
+
+#endif