arm64: dts: Enable RX buffer throtling on BT instance

arm64: dts: Enable RX buffer throtling on BT instance

Enable RX buffer throtling on BT instance to avoid overflowing of
incoming data from BT which happens when BT thread(consumer thread)
is not consuming the data.

Bug 200204458

Change-Id: Ib6a8532309dcbc531a808c2f2c7a0690e9b3b910
Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com>
Reviewed-on: http://git-master/r/1159368
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>