xfont_encoding: add mkfontscale on the host as dependency

mkfontscale on the host is needed to build xfont_encoding, therefore
we add host-xapp_mkfontscale as a dependency.

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

package/x11r7/xfont_encodings/xfont_encodings.mk

@@ -9,5 +9,6 @@ XFONT_ENCODINGS_SOURCE = encodings-$(XFONT_ENCODINGS_VERSION).tar.bz2
 XFONT_ENCODINGS_SITE = http://xorg.freedesktop.org/releases/individual/font
 XFONT_ENCODINGS_AUTORECONF = NO
 XFONT_ENCODINGS_MAKE_OPT =
+XFONT_ENCODINGS_DEPENDENCIES = host-xapp_mkfontscale
 
 $(eval $(call AUTOTARGETS,package/x11r7,xfont_encodings))