drm/amdgpu: fix ras parameter descriptions

The descriptions of modinfo wrongly show two parameters
for each feature(see below). This patch can fix this
incorrect outputs.

parm:           amdgpu_ras_enable:Enable RAS features on the GPU (0 = disable, 1 = enable, -1 = auto (default))
parm:           ras_enable:int
parm:           amdgpu_ras_mask:Mask of RAS features to enable (default 0xffffffff), only valid when ras_enable == 1
parm:           ras_mask:uint
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -498,18 +498,18 @@ MODULE_PARM_DESC(emu_mode, "Emulation mode, (1 = enable, 0 = disable)");
 module_param_named(emu_mode, amdgpu_emu_mode, int, 0444);
 
 /**
- * DOC: amdgpu_ras_enable (int)
+ * DOC: ras_enable (int)
  * Enable RAS features on the GPU (0 = disable, 1 = enable, -1 = auto (default))
  */
-MODULE_PARM_DESC(amdgpu_ras_enable, "Enable RAS features on the GPU (0 = disable, 1 = enable, -1 = auto (default))");
+MODULE_PARM_DESC(ras_enable, "Enable RAS features on the GPU (0 = disable, 1 = enable, -1 = auto (default))");
 module_param_named(ras_enable, amdgpu_ras_enable, int, 0444);
 
 /**
- * DOC: amdgpu_ras_mask (uint)
+ * DOC: ras_mask (uint)
  * Mask of RAS features to enable (default 0xffffffff), only valid when ras_enable == 1
  * See the flags in drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
  */
-MODULE_PARM_DESC(amdgpu_ras_mask, "Mask of RAS features to enable (default 0xffffffff), only valid when ras_enable == 1");
+MODULE_PARM_DESC(ras_mask, "Mask of RAS features to enable (default 0xffffffff), only valid when ras_enable == 1");
 module_param_named(ras_mask, amdgpu_ras_mask, uint, 0444);
 
 /**