[PATCH] drm/amd/display: Add htmldocs description for fused_io interface

[Roman.Li]

From: Roman Li <roman...@amd.com>

[Why]
htmldocs build warning: "Function parameter or struct member 'fused_io'
not described in 'amdgpu_display_manager'".

[How]
Add missing description.

Fixes: af632d3f59e6 ("drm/amd/display: HDCP Locality check using DMUB Fused IO")

Reported-by: Stephen Rothwell <s...@canb.auug.org.au>
Signed-off-by: Roman Li <roman...@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index f84d6cd4f733..bf2839bb80db 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -639,6 +639,11 @@ struct amdgpu_display_manager {
         */
        struct amdgpu_i2c_adapter *oem_i2c;
 
+       /**
+        * @fused_io:
+        *
+        * dmub fused io interface
+        */
        struct fused_io_sync {
                struct completion replied;
                char reply_data[0x40];  // Cannot include dmub_cmd here
-- 
2.34.1