powerpc/ppc4xx: Convert new gdsys files to SPDX license tags

Signed-off-by: Tom Rini <trini@ti.com>

Merge branch 'master' of git://www.denx.de/git/u-boot-ppc4xx

powerpc/ppc4xx: Add gdsys mclink interface

mclink is a serial interface for communication between gdsys FPGA.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.

powerpc/ppc4xx: Add gdsys mclink interface

mclink is a serial interface for communication between gdsys FPGA.

Signed-off-by: Dirk Eibach <dirk.eibach@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>

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