drm/vmwgfx/vmwgfx_resource: Fix worthy function headers demote some others

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:215: warning: Excess function parameter 'obj_type' description in 'vmw_resource_init'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:303: warning: Excess function parameter 'p_res' description in 'vmw_user_resource_noref_lookup_handle'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:328: warning: Function parameter or member 'dev_priv' not described in 'vmw_user_lookup_handle'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:328: warning: Function parameter or member 'tfile' not described in 'vmw_user_lookup_handle'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:328: warning: Function parameter or member 'handle' not described in 'vmw_user_lookup_handle'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:328: warning: Function parameter or member 'out_surf' not described in 'vmw_user_lookup_handle'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:328: warning: Function parameter or member 'out_buf' not described in 'vmw_user_lookup_handle'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:398: warning: Function parameter or member 'dirtying' not described in 'vmw_resource_do_validate'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:601: warning: Function parameter or member 'interruptible' not described in 'vmw_resource_reserve'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:601: warning: Function parameter or member 'no_backup' not described in 'vmw_resource_reserve'
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c:987: warning: Function parameter or member 'interruptible' not described in 'vmw_resource_pin'

Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Roland Scheidegger <sroland@vmware.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Zack Rusin <zackr@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210115181313.3431493-11-lee.jones@linaro.org

drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

@@ -202,7 +202,6 @@ int vmw_resource_alloc_id(struct vmw_resource *res)
  *
  * @dev_priv:       Pointer to a device private struct.
  * @res:            The struct vmw_resource to initialize.
- * @obj_type:       Resource object type.
  * @delay_id:       Boolean whether to defer device id allocation until
  *                  the first validation.
  * @res_free:       Resource destructor.
@@ -288,8 +287,6 @@ int vmw_user_resource_lookup_handle(struct vmw_private *dev_priv,
  * @tfile:        Pointer to a struct ttm_object_file identifying the caller
  * @handle:       The TTM user-space handle
  * @converter:    Pointer to an object describing the resource type
- * @p_res:        On successful return the location pointed to will contain
- *                a pointer to a refcounted struct vmw_resource.
  *
  * If the handle can't be found or is associated with an incorrect resource
  * type, -EINVAL will be returned.
@@ -315,7 +312,7 @@ vmw_user_resource_noref_lookup_handle(struct vmw_private *dev_priv,
 	return converter->base_obj_to_res(base);
 }
 
-/**
+/*
  * Helper function that looks either a surface or bo.
  *
  * The pointer this pointed at by out_surf and out_buf needs to be null.
@@ -388,6 +385,7 @@ static int vmw_resource_buf_alloc(struct vmw_resource *res,
  * @res:            The resource to make visible to the device.
  * @val_buf:        Information about a buffer possibly
  *                  containing backup data if a bind operation is needed.
+ * @dirtying:       Transfer dirty regions.
  *
  * On hardware resource shortage, this function returns -EBUSY and
  * should be retried once resources have been freed up.
@@ -586,7 +584,7 @@ vmw_resource_check_buffer(struct ww_acquire_ctx *ticket,
 	return ret;
 }
 
-/**
+/*
  * vmw_resource_reserve - Reserve a resource for command submission
  *
  * @res:            The resource to reserve.
@@ -973,7 +971,7 @@ void vmw_resource_evict_all(struct vmw_private *dev_priv)
 	mutex_unlock(&dev_priv->cmdbuf_mutex);
 }
 
-/**
+/*
  * vmw_resource_pin - Add a pin reference on a resource
  *
  * @res: The resource to add a pin reference on