amd: remove the _UMD suffix from register definitions

It was mistakenly added to indicate it's for a User-Mode Driver,
but all defined registers in Mesa are.

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15098>

src/amd/registers/parse_kernel_headers.py

@@ -683,6 +683,10 @@ def generate_json(gfx_version, amd_headers_path):
             assert idx < len(base_offsets)
             offset += int(base_offsets[idx], 0) * 4
 
+        # Remove the _UMD suffix because it was mistakenly added to indicate it's for a User-Mode Driver
+        if name[-4:] == '_UMD':
+            name = name[:-4]
+
         # Only accept writeable registers and debug registers
         if register_filter(gfx_version, name, offset, offset in added_offsets):
             regs[name] = {