spdxcheck: drivers/cpufreq/amd-pstate-ut.c: 1:28 Invalid License ID: GPL-1.0-or-later

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   094226ad94f471a9f19e8f8e7140a09c2625abaa
commit: 14eb1c96e3a3fd9cd377ac9af3c7a410f8bf1015 cpufreq: amd-pstate: Add test module for amd-pstate driver
date:   6 weeks ago
reproduce:
        scripts/spdxcheck.py

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>

spdxcheck warnings: (new ones prefixed by >>)
>> drivers/cpufreq/amd-pstate-ut.c: 1:28 Invalid License ID: GPL-1.0-or-later
   drivers/spi/spi-gxp.c: 1:35 Invalid token: =or-later

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