crc16: Move standard CRC-16 implementation from ubifs to lib

This implementation provides standard CRC-16 algorithm with polynomial
x^16 + x^15 + x^2 + 1.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>

fs/ubifs/Makefile

@@ -9,5 +9,5 @@
 
 obj-y := ubifs.o io.o super.o sb.o master.o lpt.o
 obj-y += lpt_commit.o scan.o lprops.o
-obj-y += tnc.o tnc_misc.o debug.o crc16.o budget.o
+obj-y += tnc.o tnc_misc.o debug.o budget.o
 obj-y += log.o orphan.o recovery.o replay.o gc.o

include/u-boot/crc.h

@@ -25,6 +25,9 @@
  */
 unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len);
 
+/* lib/crc16.c - 16 bit CRC with polynomial x^16 + x^15 + x^2 + 1 */
+uint16_t crc16(uint16_t crc, const unsigned char *buffer, size_t len);
+
 /* lib/crc16-ccitt.c - 16 bit CRC with polynomial x^16+x^12+x^5+1 (CRC-CCITT) */
 uint16_t crc16_ccitt(uint16_t crc_start, const unsigned char *s, int len);
 /**

lib/Makefile

@@ -35,6 +35,7 @@ obj-$(CONFIG_CIRCBUF) += circbuf.o
 endif
 
 obj-y += crc8.o
+obj-y += crc16.o
 obj-y += crc16-ccitt.o
 obj-$(CONFIG_ERRNO_STR) += errno_str.o
 obj-$(CONFIG_FIT) += fdtdec_common.o