lib/crc: Explicitly include <linux/export.h>

Fix build warnings with W=1 that started appearing after
commit a934a57a42f6 ("scripts/misc-check: check missing #include
<linux/export.h> when W=1"). While at it, sort the include lists
alphabetically.

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Eric Biggers <[e-mail]>

lib/crc/crc-ccitt.c

···
 // SPDX-License-Identifier: GPL-2.0-only
 
-#include <linux/types.h>
-#include <linux/module.h>
 #include <linux/crc-ccitt.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/types.h>
 
 /*
  * This mysterious table is just the CRC of each possible byte. It can be

lib/crc/crc-itu-t.c

···
  *      crc-itu-t.c
  */
 
-#include <linux/types.h>
-#include <linux/module.h>
 #include <linux/crc-itu-t.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/types.h>
 
 /* CRC table for the CRC ITU-T V.41 0x1021 (x^16 + x^12 + x^5 + 1) */
 const u16 crc_itu_t_table[256] = {

lib/crc/crc-t10dif-main.c

···
  * Written by Martin K. Petersen <[e-mail]>
  */
 
-#include <linux/types.h>
-#include <linux/module.h>
 #include <linux/crc-t10dif.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/types.h>
 
 /*
  * Table generated using the following polynomial:

lib/crc/crc16.c

···
  *      crc16.c
  */
 
-#include <linux/types.h>
-#include <linux/module.h>
 #include <linux/crc16.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/types.h>
 
 /** CRC table for the CRC-16. The poly is 0x8005 (x^16 + x^15 + x^2 + 1) */
 static const u16 crc16_table[256] = {

lib/crc/crc32-main.c

···
 /* see: Documentation/staging/crc32.rst for a description of algorithms */
 
 #include <linux/crc32.h>
+#include <linux/export.h>
 #include <linux/module.h>
 #include <linux/types.h>
 

lib/crc/crc4.c

···
  */
 
 #include <linux/crc4.h>
+#include <linux/export.h>
 #include <linux/module.h>
 
 static const uint8_t crc4_tab[] = {

lib/crc/crc64-main.c

···
  *   Author: Coly Li <[e-mail]>
  */
 
+#include <linux/crc64.h>
+#include <linux/export.h>
 #include <linux/module.h>
 #include <linux/types.h>
-#include <linux/crc64.h>
+
 #include "crc64table.h"
 
 static inline u64 __maybe_unused

lib/crc/crc7.c

···
  *      crc7.c
  */
 
-#include <linux/types.h>
-#include <linux/module.h>
 #include <linux/crc7.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/types.h>
 
 /*
  * Table for CRC-7 (polynomial x^7 + x^3 + 1).

lib/crc/crc8.c

···
 
 #define pr_fmt(fmt)		KBUILD_MODNAME ": " fmt
 
-#include <linux/module.h>
 #include <linux/crc8.h>
+#include <linux/export.h>
+#include <linux/module.h>
 #include <linux/printk.h>
 
 /**