SPDX: Correct SPDX tags from recent xilinx merge

Correct the SPDX tag format.

Fixes: 3b52847a451a ("Merge tag 'xilinx-for-v2018.07' of git://www.denx.de/git/u-boot-microblaze")
Signed-off-by: Tom Rini <trini@konsulko.com>
3 files changed