drm/amd/display: Fix invalid Copyright notice

[Why && How]
Copyright notice failed in the Palamida scan and make changes to
align with our guidelines.
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Leo Ma <hanghong.ma@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/Kconfig

 # SPDX-License-Identifier: MIT
+# Copyright © 2019-2024 Advanced Micro Devices, Inc. All rights reserved.
+
 menu "Display Engine Configuration"
 	depends on DRM && DRM_AMDGPU
 

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn30/dcn30_smu11_driver_if.h

 // SPDX-License-Identifier: MIT
-// This is a stripped-down version of the smu11_driver_if.h file for the relevant DAL interfaces.
+/* Copyright © 2022-2024 Advanced Micro Devices, Inc. All rights reserved. */
 
 #define SMU11_DRIVER_IF_VERSION 0x40
 

drivers/gpu/drm/amd/display/dc/clk_mgr/dcn32/dcn32_smu13_driver_if.h

 // SPDX-License-Identifier: MIT
-// This is a stripped-down version of the smu13_driver_if.h file for the relevant DAL interfaces.
+/* Copyright © 2022-2024 Advanced Micro Devices, Inc. All rights reserved. */
 
 #define SMU13_DRIVER_IF_VERSION  0x18
 

drivers/gpu/drm/amd/display/dc/dcn20/Makefile

 # SPDX-License-Identifier: MIT
-#
-# Makefile for DCN.
+# Copyright © 2019-2024 Advanced Micro Devices, Inc. All rights reserved.
 
 DCN20 = dcn20_hubp.o \
 		dcn20_mpc.o dcn20_opp.o dcn20_mmhubbub.o \

drivers/gpu/drm/amd/display/dc/dcn201/Makefile

 # SPDX-License-Identifier: MIT
-#
-# Makefile for DCN.
+# Copyright © 2021-2024 Advanced Micro Devices, Inc. All rights reserved.
+
 DCN201 = dcn201_mpc.o dcn201_hubp.o dcn201_opp.o \
 	dcn201_dccg.o dcn201_link_encoder.o
 

drivers/gpu/drm/amd/display/dc/dcn21/Makefile

 # SPDX-License-Identifier: MIT
-#
-# Makefile for DCN21.
+# Copyright © 2019-2024 Advanced Micro Devices, Inc. All rights reserved.
 
 DCN21 = dcn21_hubp.o \
 	 dcn21_link_encoder.o dcn21_dccg.o

drivers/gpu/drm/amd/display/dc/dsc/Makefile

 # SPDX-License-Identifier: MIT
-#
-# Makefile for the 'dsc' sub-component of DAL.
+# Copyright © 2019-2024 Advanced Micro Devices, Inc. All rights reserved.
 
 ifdef CONFIG_DRM_AMD_DC_FP