ANDROID: fix merge issue in fsnotify.h

Youling reports that the fsnotify.h fixup done in 58dc0ef3
("ANDROID: Remove out-of-tree difference in fsnotify.h") might not have
been completly correct.

So try to fix this up by passing down lower_path in the call to
fsnotify_parent() in fsnotify_open().

Fixes: 58dc0ef3 ("ANDROID: Remove out-of-tree difference in fsnotify.h")
Cc: Matthias Maennich <maennich@google.com>
Cc: Daniel Rosenberg <drosen@google.com>
Reported-by: youling 257 <youling257@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I23b5cb2d41b82e386a4f0620efec6b75e5b2d138