ASoC: amd: ps: update license

To align with AMD SoundWire manager driver license, update license as
GPL-2.0-only for Pink Sardine ACP PCI driver and corresponding child
drivers.
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://msgid.link/r/20240222102656.631144-1-Vijendar.Mukunda@amd.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/ps/Makefile

-# SPDX-License-Identifier: GPL-2.0+
+# SPDX-License-Identifier: GPL-2.0-only
 # Pink Sardine platform Support
 snd-pci-ps-objs := pci-ps.o
 snd-ps-pdm-dma-objs := ps-pdm-dma.o

sound/soc/amd/ps/pci-ps.c

-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * AMD Pink Sardine ACP PCI Driver
  *

sound/soc/amd/ps/ps-mach.c

-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * Machine driver for AMD Pink Sardine platform using DMIC
  *

sound/soc/amd/ps/ps-pdm-dma.c

-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * AMD ALSA SoC Pink Sardine PDM Driver
  *

sound/soc/amd/ps/ps-sdw-dma.c

-// SPDX-License-Identifier: GPL-2.0+
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * AMD ALSA SoC Pink Sardine SoundWire DMA Driver
  *