devel/libev: Unbreak current after inotify add
After inotify was added to main, if condition bellow leads to build error
related to missing (linux) statfs.h header.
Fix it by adjusting correct headers:
#if EV_USE_INOTIFY
- include <sys/statfs.h>
+# include <sys/mount.h>
- include <sys/inotify.h>
While here, refresh patches.
Approved by: portmgr (blanket, build fix)
Sugested by: markj
See also; https://lists.freebsd.org/archives/dev-commits-src-all/2025-July/057269.html