Tag to the hdl_2019_r2 release. This will point to the same commit as…

… the latest release candidate.

Tag to the hdl_2019_r2 initial release candidate.

USDRX1 ulstrasound hdl reference design

FMCOMMS7 hdl reference design

FMCJESDADC1 hdl reference design for ZCU102 carrier

FMCJESDADC1 hdl reference design for A10SOC carrier

Paul's attempt to add scatter-gather support for ADI AXI_DMAC IP

hdl_2019_r1 release tag

Tag for the hdl_2018_r2 release

Solves the following EZ questions:

https://ez.analog.com/linux-device-drivers/linux-software-drivers/f/q-a/108820/ad9208-on-zcu102-linux-problems
https://ez.analog.com/fpga/f/q-a/102373/ad9208-reference-clock-from-board-sma-j3-issue