lcdproc: fix autobuild errors

The autobuilders are falling over building lcdproc, with failures like the
following.

  http://autobuild.buildroot.net/results/622b7da10be751c725ba25eb40102269790b4b03/build-end.log



As Thomas Petazzoni has pointed out, the compile command lines incorrectly
contain host header and library search paths, such as the following.

  -I/home/peko/scratch/host/usr/include/freetype2
  -L/home/peko/scratch/host/usr/lib -lfreetype

This patch changes the lcdproc package to pass the freetype installation
prefixes on the configure command line.

Signed-off-by: Simon Dawson <spdawson@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>