erlang-p1-xml: Add host dependencies

This should fix the error reported by autobuild:
http://autobuild.buildroot.net/results/3b4/3b474323cb50d0d5d09611fa068a9d1bd3bd4bb5/

Signed-off-by: Johan Oudinet <johan.oudinet@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/erlang-p1-xml/erlang-p1-xml.mk

@@ -9,6 +9,7 @@ ERLANG_P1_XML_SITE = $(call github,processone,fast_xml,$(ERLANG_P1_XML_VERSION))
 ERLANG_P1_XML_LICENSE = Apache-2.0
 ERLANG_P1_XML_LICENSE_FILES = LICENSE.txt
 ERLANG_P1_XML_DEPENDENCIES = expat erlang-p1-utils
+ERLANG_P1_XML_HOST_DEPENDENCIES = host-expat host-erlang-p1-utils
 ERLANG_P1_XML_INSTALL_STAGING = YES
 
 ERLANG_P1_XML_USE_AUTOCONF = YES