arm64: enable AMD DC display controller for RDNA2 GPU support

Enable CONFIG_DRM_AMD_DC, CONFIG_DRM_AMD_DC_DCN, and
CONFIG_DRM_AMD_DC_DSC_SUPPORT for all arm64 UEFI kernel configs.

This enables proper display support for modern AMD GPUs including
Radeon RX 6000 series (RDNA2 architecture) such as the Radeon 6400.

The Display Controller (DC) is required for display output on modern
AMD GPUs, while DCN (Display Core Next) provides support for newer
architectures. DSC (Display Stream Compression) enables better
bandwidth utilization for high-resolution displays.

Signed-off-by: Igor Pecovnik <igor@armbian.com>

Author: igorpecovnik

config/kernel/linux-uefi-arm64-current.config

@@ -3542,6 +3542,9 @@ CONFIG_DRM_AMDGPU=m
 CONFIG_DRM_AMDGPU_SI=y
 CONFIG_DRM_AMDGPU_CIK=y
 CONFIG_DRM_AMD_ACP=y
+CONFIG_DRM_AMD_DC=y
+CONFIG_DRM_AMD_DC_DCN=y
+CONFIG_DRM_AMD_DC_DSC_SUPPORT=y
 CONFIG_DRM_AMD_DC_SI=y
 CONFIG_HSA_AMD=y
 CONFIG_DRM_NOUVEAU=m

config/kernel/linux-uefi-arm64-edge.config

@@ -3540,6 +3540,9 @@ CONFIG_DRM_AMDGPU=m
 CONFIG_DRM_AMDGPU_SI=y
 CONFIG_DRM_AMDGPU_CIK=y
 CONFIG_DRM_AMD_ACP=y
+CONFIG_DRM_AMD_DC=y
+CONFIG_DRM_AMD_DC_DCN=y
+CONFIG_DRM_AMD_DC_DSC_SUPPORT=y
 CONFIG_DRM_AMD_DC_SI=y
 CONFIG_HSA_AMD=y
 CONFIG_DRM_NOUVEAU=m

config/kernel/linux-uefi-arm64-legacy.config

@@ -3552,6 +3552,9 @@ CONFIG_DRM_AMDGPU=m
 CONFIG_DRM_AMDGPU_SI=y
 CONFIG_DRM_AMDGPU_CIK=y
 CONFIG_DRM_AMD_ACP=y
+CONFIG_DRM_AMD_DC=y
+CONFIG_DRM_AMD_DC_DCN=y
+CONFIG_DRM_AMD_DC_DSC_SUPPORT=y
 CONFIG_DRM_AMD_DC_SI=y
 CONFIG_HSA_AMD=y
 CONFIG_DRM_NOUVEAU=m