meta-zephyr-sdk: qemu: Enable network during configure

Enable network access during the `do_configure` step because QEMU build
system may fetch additional submodules, such as `keycodemapdb`, in it.

Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
(cherry picked from commit 451e4e2)

Author: stephanosio

meta-zephyr-sdk/recipes-devtools/qemu/qemu-zephyr_git.bb

@@ -114,6 +114,7 @@ do_configure() {
     ${S}/configure ${EXTRA_OECONF}  --target-list="${QEMU_TARGETS}"
 }
 do_configure[cleandirs] += "${B}"
+do_configure[network] = "1"
 
 do_install () {
 	export STRIP=""