glib2: the host build also needs --with-libiconv=gnu

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

libs/glib2/Makefile

@@ -45,7 +45,8 @@ define Package/glib2/description
 endef
 
 HOST_CONFIGURE_ARGS += \
-	--disable-selinux
+	--disable-selinux \
+	--with-libiconv=gnu
 
 CONFIGURE_ARGS += \
 	--enable-shared \