package/sphinxbase: add missing dependency on host-bison

Fixes:

  http://autobuild.buildroot.net/results/741f04fce74b4dfc4d4405d14c82c21f67cbfff1/

Signed-off-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/sphinxbase/sphinxbase.mk

@@ -11,6 +11,9 @@ SPHINXBASE_LICENSE = BSD-2c
 # 5prealpha tarballs". The license is contained in the copyright notice at the
 # top of each source file. For example:
 SPHINXBASE_LICENSE_FILES = src/libsphinxbase/util/bio.c
+
+SPHINXBASE_DEPENDENCIES = host-bison
+
 SPHINXBASE_CONF_OPTS = --without-python --without-lapack
 
 $(eval $(autotools-package))