default or selected kernelversion does not have config value CONFIG_DRM_AMD_DC_DCN1_0.
Result is shown for kernelversion 6.7.7

CONFIG_DRM_AMD_DC_DCN1_0 (not configurable)

configname: CONFIG_DRM_AMD_DC_DCN1_0

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Display Engine Configuration
└─>DRM_AMD_DC_DCN1_0
In linux kernel since version 4.2 (release Date: 2015-08-30)  
RV family support for display engine