fsnotify/fdinfo: include fdinfo.h for inotify_show_fdinfo()

mainline inclusion
from mainline-5.0-rc1
commit d6f7aa9820f21a879af8ceda17b2ebd1cf4beb25
category: bugfix
bugzilla: 10640
CVE: NA
---------------------------

inotify_show_fdinfo() is defined in fs/notify/fdinfo.c and declared in
fs/notify/fdinfo.h, but the declaration isn't included at the point of
the definition.  Include the header to enforce that the definition
matches the declaration.

This addresses a gcc warning when -Wmissing-prototypes is enabled.
Signed-off-by: NEric Biggers <ebiggers@google.com>
Signed-off-by: NJan Kara <jack@suse.cz>
Signed-off-by: Nyangerkun <yangerkun@huawei.com>
Reviewed-by: Nzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

fs/notify/fdinfo.c

@@ -15,6 +15,7 @@
 #include <linux/exportfs.h>
 
 #include "inotify/inotify.h"
+#include "fdinfo.h"
 #include "fsnotify.h"
 
 #if defined(CONFIG_PROC_FS)