libsodium: add host variant

Signed-off-by: Wojciech Niziński <niziak@spox.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libsodium/libsodium.mk

@@ -15,3 +15,4 @@ LIBSODIUM_CONF_OPTS += --disable-pie
 endif
 
 $(eval $(autotools-package))
+$(eval $(host-autotools-package))