vc4: Fix doxygen warnings

Now that vc4 automated code documentation can be generated with
doxygen, fix the warnings issued by Doxygen 1.8.11.

Signed-off-by: Rhys Kidd <rhyskidd@gmail.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

src/gallium/drivers/vc4/vc4_qir_schedule.c

@@ -80,8 +80,8 @@ struct schedule_state {
 enum direction { F, R };
 
 /**
- * Marks a dependency between two intructions, that @after must appear after
- * @before.
+ * Marks a dependency between two intructions, that \p after must appear after
+ * \p before.
  *
  * Our dependencies are tracked as a DAG.  Since we're scheduling bottom-up,
  * the latest instructions with nothing left to schedule are the DAG heads,

src/gallium/drivers/vc4/vc4_tiling.c

@@ -269,8 +269,8 @@ vc4_store_t_image(void *dst, uint32_t dst_stride,
 }
 
 /**
- * Loads pixel data from the start (microtile-aligned) box in @src to the
- * start of @dst according to the given tiling format.
+ * Loads pixel data from the start (microtile-aligned) box in \p src to the
+ * start of \p dst according to the given tiling format.
  */
 void
 vc4_load_tiled_image(void *dst, uint32_t dst_stride,
@@ -293,8 +293,8 @@ vc4_load_tiled_image(void *dst, uint32_t dst_stride,
 }
 
 /**
- * Stores pixel data from the start of @src into a (microtile-aligned) box in
- * @dst according to the given tiling format.
+ * Stores pixel data from the start of \p src into a (microtile-aligned) box in
+ * \p dst according to the given tiling format.
  */
 void
 vc4_store_tiled_image(void *dst, uint32_t dst_stride,