zlib: add module description

Modules without a description now cause a warning:

WARNING: modpost: missing MODULE_DESCRIPTION() in lib/zlib_inflate/zlib_inflate.o

Link: https://lkml.kernel.org/r/[e-mail]
Fixes: 6c6c1fc09de3 ("modpost: require a MODULE_DESCRIPTION()")
Signed-off-by: Arnd Bergmann <[e-mail]>
Cc: Jeff Johnson <[e-mail]>
Cc: Masahiro Yamada <[e-mail]>
Cc: Stehen Rothwell <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

lib/zlib_inflate/inflate_syms.c

···
 EXPORT_SYMBOL(zlib_inflateReset);
 EXPORT_SYMBOL(zlib_inflateIncomp); 
 EXPORT_SYMBOL(zlib_inflate_blob);
+MODULE_DESCRIPTION("Data decompression using the deflation algorithm");
 MODULE_LICENSE("GPL");