7. Add copyright & license for all files with ADI JESD specific license

[IuliaCMoldovan]

Seventh PR out of a series of PRs regarding updating the licenses and copyrights in all files. They should be merged in this order.

New format: Copyright (C) year, year Analog Devices, Inc. All rights reserved.

First commit:

• Adds/edits the copyright and license header for all files which need ADI JESD specific license
• The starting year was determined and changed based on git log --follow --format=%ad --date=format:'%Y' $file | tail -1 which returns the first year it was added
• All the years when it was edited should be listed. If they're not continuous years then with comma, otherwise with hyphen
• To some files, the complete header was added, since it was missing

Second commit:

• Adds LICENSE_ADIJESD204 license file, where the whole JESD204 license is specified and the short identifier
• Removes library/jesd204/README.md

Third commit:

• Inserts the "Support" section from previously deleted file library/jesd204/README.md into hdl/README.md

Forth commit:

• Inserts the short identifier for LICENSE_ADIBSD license file

[StancaPop]

Looks good.