arm64: zynqmp: Sync licenses with Linux kernel

arm64: zynqmp: Sync licenses with Linux kernel

There is difference between licenses in the Linux kernel and there
shouldn't be any diff because all changes are coming from the same source
at the same time. The difference is really in a time when they were
upstreamed. That's why sync it up.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/813b29378083153b67c60772f28cd2613519f338.1695378830.git.michal.simek@amd.com