inotify-tools: fix static-only build

Add a patch to the inotify-tools package to fix static-only
build. Fixes:

  http://autobuild.buildroot.org/results/53e/53e98db373ee0218329a5a9c418f10d7b056b5d3/



Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>