common: Drop linux/crc8.h

We have an existing U-Boot header for the one function that this defines.
Use that instead of the linux/ one. Move over the nice comment.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>

include/linux/crc8.h

@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright (c) 2013 Google, Inc
- */
-
-
-#ifndef __linux_crc8_h
-#define __linux_crc8_h
-
-/**
- * crc8() - Calculate and return CRC-8 of the data
- *
- * This uses an x^8 + x^2 + x + 1 polynomial.  A table-based algorithm would
- * be faster, but for only a few bytes it isn't worth the code size
- *
- * @crc_start: CRC8 start value
- * @vptr: Buffer to checksum
- * @len: Length of buffer in bytes
- * @return CRC8 checksum
- */
-unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len);
-
-#endif