buildroot

tinyhttpd: fix initscript, install as /usr/sbin/tinyhttpd

The init script was expecting the binary to be called tinyhttpd, but httpd
was used. Fix it to install as tinyhttpd as httpd will conflict with other
web servers (E.G. the busybox one).

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>