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>