Add OpenNDS to BPi-R4 and U6Plus

Add opennds to 2 devices. Don't add to U6Lite, since there are not enough memory to include it.

BUG=b/537139206
TEST=./U6Plus.sh ./BananaPi-R4.sh

Change-Id: I39dbd66a87ce55f84d40c655dc9623811898e598
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/8130045
Commit-Queue: Alexandr Astrouski <astrouski@google.com>
Reviewed-by: Jason Stanko <jstanko@google.com>
Tested-by: Alexandr Astrouski <astrouski@google.com>

contrib/cros_openwrt_sources/image_generator/configs/BananaPi-R4/defconfig

diff --git a/contrib/cros_openwrt_sources/image_generator/configs/BananaPi-R4/defconfig b/contrib/cros_openwrt_sources/image_generator/configs/BananaPi-R4/defconfig
index 96cac0f..c7f2609 100644
--- a/contrib/cros_openwrt_sources/image_generator/configs/BananaPi-R4/defconfig
+++ b/contrib/cros_openwrt_sources/image_generator/configs/BananaPi-R4/defconfig
@@ -46,3 +46,4 @@
 CONFIG_PACKAGE_libopenssl=y
 CONFIG_PACKAGE_libopenssl-conf=y
 CONFIG_PACKAGE_kmod-veth=y
+CONFIG_PACKAGE_opennds=y

contrib/cros_openwrt_sources/image_generator/configs/U6Plus/defconfig

diff --git a/contrib/cros_openwrt_sources/image_generator/configs/U6Plus/defconfig b/contrib/cros_openwrt_sources/image_generator/configs/U6Plus/defconfig
index 95c9de6..5930db4 100644
--- a/contrib/cros_openwrt_sources/image_generator/configs/U6Plus/defconfig
+++ b/contrib/cros_openwrt_sources/image_generator/configs/U6Plus/defconfig
@@ -80,3 +80,4 @@
 CONFIG_PACKAGE_iperf3=y
 CONFIG_BUSYBOX_CUSTOM=y
 CONFIG_BUSYBOX_CONFIG_TIMEOUT=y
+CONFIG_PACKAGE_opennds=y