jsmin: add .hash file
Fixes:
http://autobuild.buildroot.org/results/c05/c05a9da77c4d8ad1e64e029c9e2fd65ebf35772d/
http://autobuild.buildroot.org/results/6ac/6acb5d5c56ece6cefdd135bdb90be035a3200e0a/
Similar to jquery-keyboard, it seems the jsmin tarball on the autobuilder is
corrupt. Fix it by adding a .hash file so it falls back to our s.b.o
mirror.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Peter Korsgaard