include/bcd: move bcd code to commonlib/bsd/include

Move bcd2bin() / bin2bcd() functions to commonlib/bsd/include/

Also, the license is changed from GPL to BSD.
This is because it is needed from "utils" (see CL in the chain).

For reference bin2bcd() & bcd2bin() are very simple functions.
There are already BSD implementations, like these ones (just to
name a few):
https://chromium.googlesource.com/chromiumos/platform/mosys/+/refs/heads/main/include/lib/math.h#67
http://web.mit.edu/freebsd/head/sys/contrib/octeon-sdk/cvmx-cn3010-evb-hs5.c

BUG=b:172210863
TEST=make (everything compiled Ok).

Change-Id: If2eba82da35838799bcbcf38303de6bd53f7eb72
Signed-off-by: Ricardo Quesada <ricardoq@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56904
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/commonlib/bsd/include/commonlib/bsd/bcd.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
+/* SPDX-License-Identifier: BSD-3-Clause */
 
 #ifndef _BCD_H_
 #define _BCD_H_

src/drivers/ams/as3722rtc.c

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <bcd.h>
+#include <commonlib/bsd/bcd.h>
 #include <device/i2c_simple.h>
 #include <rtc.h>
 #include <stdint.h>

src/drivers/elog/elog.c

@@ -1,10 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <acpi/acpi.h>
-#include <bcd.h>
 #include <boot_device.h>
 #include <bootstate.h>
 #include <cbmem.h>
+#include <commonlib/bsd/bcd.h>
 #include <commonlib/bsd/elog.h>
 #include <commonlib/region.h>
 #include <console/console.h>

src/drivers/i2c/pcf8523/pcf8523.c

@@ -1,9 +1,9 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
+#include <commonlib/bsd/bcd.h>
+#include <console/console.h>
 #include <device/smbus.h>
 #include <version.h>
-#include <console/console.h>
-#include <bcd.h>
 #include "chip.h"
 
 /* Set RTC date from coreboot build date. */

src/drivers/i2c/rx6110sa/rx6110sa.c

@@ -2,13 +2,13 @@
 
 #include <acpi/acpi_device.h>
 #include <acpi/acpigen.h>
+#include <commonlib/bsd/bcd.h>
+#include <console/console.h>
 #include <device/device.h>
 #include <device/i2c.h>
 #include <device/i2c_bus.h>
-#include <version.h>
-#include <console/console.h>
-#include <bcd.h>
 #include <timer.h>
+#include <version.h>
 #include "chip.h"
 #include "rx6110sa.h"
 

src/drivers/pc80/rtc/mc146818rtc.c

@@ -2,15 +2,15 @@
 
 #include <acpi/acpi.h>
 #include <arch/io.h>
-#include <bcd.h>
-#include <fallback.h>
-#include <version.h>
+#include <commonlib/bsd/bcd.h>
 #include <console/console.h>
+#include <fallback.h>
 #include <pc80/mc146818rtc.h>
 #include <rtc.h>
 #include <security/vboot/vbnv.h>
 #include <security/vboot/vbnv_layout.h>
 #include <types.h>
+#include <version.h>
 
 static void cmos_reset_date(void)
 {

src/drivers/ti/tps65913/tps65913rtc.c

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#include <bcd.h>
+#include <commonlib/bsd/bcd.h>
 #include <console/console.h>
 #include <device/i2c_simple.h>
 #include <rtc.h>

src/include/cper.h

@@ -3,10 +3,10 @@
 #ifndef _CPER_H_
 #define _CPER_H_
 
+#include <commonlib/bsd/bcd.h>
+#include <rtc.h>
 #include <types.h>
 #include <uuid.h>
-#include <bcd.h>
-#include <rtc.h>
 
 /* This file contains some definitions and helpers for implementing structures
  * in the UEFI specification, Appendix "Common Platform Error Record".  This

src/soc/mediatek/common/include/soc/rtc_common.h

@@ -3,7 +3,7 @@
 #ifndef SOC_MEDIATEK_RTC_COMMON_H
 #define SOC_MEDIATEK_RTC_COMMON_H
 
-#include <bcd.h>
+#include <commonlib/bsd/bcd.h>
 #include <console/console.h>
 #include <rtc.h>
 #include <stdbool.h>

src/soc/rockchip/common/rk808.c

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <assert.h>
-#include <bcd.h>
+#include <commonlib/bsd/bcd.h>
 #include <console/console.h>
 #include <delay.h>
 #include <device/i2c_simple.h>