lirc: fix cross compilation

Make sure lirc uses kernel headers from target, not the build
host, when generating input_map.inc.

packages/sysutils/lirc/package.mk

@@ -37,6 +37,12 @@ PKG_CONFIGURE_OPTS_TARGET="ac_cv_func_forkpty=no \
                            --with-gnu-ld \
                            --without-x"
 
+pre_configure_target() {
+  # patch lirc-make-devinput to use target kernel include
+  sed -e "s|/usr/include/linux/|${SYSROOT_PREFIX}/usr/include/linux/|g" \
+      -i ${ROOT}/${PKG_BUILD}/tools/lirc-make-devinput
+}
+
 post_makeinstall_target() {
   rm -rf $INSTALL/usr/lib/systemd
   rm -rf $INSTALL/lib