zlib: move EXPORT_SYMBOL() and MODULE_LICENSE() out of dfltcc_syms.c

In commit 11fb479ff5d9 ("zlib: export S390 symbols for zlib modules"), I
added EXPORT_SYMBOL()s to dfltcc_inflate.c but then Mikhail said that
these should probably be in dfltcc_syms.c with the other
EXPORT_SYMBOL()s.

However, that is contrary to the current kernel style, which places
EXPORT_SYMBOL() immediately after the function that it applies to, so
move all EXPORT_SYMBOL()s to their respective function locations and
drop the dfltcc_syms.c file. Also move MODULE_LICENSE() from the
deleted file to dfltcc.c.

[[e-mail]: remove dfltcc_syms.o from Makefile]
Link: https://lkml.kernel.org/r/[e-mail]

Link: https://lkml.kernel.org/r/[e-mail]
Fixes: 11fb479ff5d9 ("zlib: export S390 symbols for zlib modules")
Signed-off-by: Randy Dunlap <[e-mail]>
Cc: Acked-by: Ilya Leoshkevich <[e-mail]>
Acked-by: Christian Borntraeger <[e-mail]>
Cc: Zaslonko Mikhail <[e-mail]>
Cc: Heiko Carstens <[e-mail]>
Cc: Vasily Gorbik <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

lib/zlib_dfltcc/Makefile

···
 
 obj-$(CONFIG_ZLIB_DFLTCC) += zlib_dfltcc.o
 
-zlib_dfltcc-objs := dfltcc.o dfltcc_deflate.o dfltcc_inflate.o dfltcc_syms.o
+zlib_dfltcc-objs := dfltcc.o dfltcc_deflate.o dfltcc_inflate.o

lib/zlib_dfltcc/dfltcc.c

···
 // SPDX-License-Identifier: Zlib
 /* dfltcc.c - SystemZ DEFLATE CONVERSION CALL support. */
 
-#include <linux/zutil.h>
+#include <linux/export.h>
+#include <linux/module.h>
 #include "dfltcc_util.h"
 #include "dfltcc.h"
 
···
     dfltcc_state->dht_threshold = DFLTCC_DHT_MIN_SAMPLE_SIZE;
     dfltcc_state->param.ribm = DFLTCC_RIBM;
 }
+EXPORT_SYMBOL(dfltcc_reset);
+
+MODULE_LICENSE("GPL");

lib/zlib_dfltcc/dfltcc_deflate.c

···
 #include "dfltcc_util.h"
 #include "dfltcc.h"
 #include <asm/setup.h>
+#include <linux/export.h>
 #include <linux/zutil.h>
 
 /*
···
 
     return 1;
 }
+EXPORT_SYMBOL(dfltcc_can_deflate);
 
 static void dfltcc_gdht(
     z_streamp strm
···
         goto again; /* deflate() must use all input or all output */
     return 1;
 }
+EXPORT_SYMBOL(dfltcc_deflate);

lib/zlib_dfltcc/dfltcc_syms.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/lib/zlib_dfltcc/dfltcc_syms.c
- *
- * Exported symbols for the s390 zlib dfltcc support.
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/zlib.h>
-#include "dfltcc.h"
-
-EXPORT_SYMBOL(dfltcc_can_deflate);
-EXPORT_SYMBOL(dfltcc_deflate);
-EXPORT_SYMBOL(dfltcc_reset);
-MODULE_LICENSE("GPL");