drm/amdgpu/radeon: Use radeon by default for CIK GPUs

Even if CONFIG_DRM_AMDGPU_CIK is enabled.

There is no feature parity yet for CIK, in particular amdgpu doesn't
support HDMI/DisplayPort audio without DC.

v2:
* Clarify the lack of feature parity being related to HDMI/DP audio.
* Fix "SI" typo in DRM_AMDGPU_CIK help entry.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig b/drivers/gpu/drm/amd/amdgpu/Kconfig
index 8d36087..2668245 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
@@ -17,11 +17,11 @@
 	help
 	  Choose this option if you want to enable support for CIK asics.
 
-	  CIK is already supported in radeon. If you enable this option,
-	  support for CIK will be provided by amdgpu and disabled in
-	  radeon by default. Use module options to override this:
+	  CIK is already supported in radeon. Support for CIK in amdgpu
+	  will be disabled by default and is still provided by radeon.
+	  Use module options to override this:
 
-	  radeon.cik_support=1 amdgpu.cik_support=0
+	  radeon.cik_support=0 amdgpu.cik_support=1
 
 config DRM_AMDGPU_USERPTR
 	bool "Always enable userptr write support"