dma-debug: reorder struct dma_debug_entry fields

 * struct dma_debug_entry - track a dma_map* or dma_alloc_coherent mapping

 * @list: node on pre-allocated free_entries list

 * @dev: 'dev' argument to dma_map_{page|single|sg} or dma_alloc_coherent

 * @type: single, page, sg, coherent

 * @pfn: page frame of the start address

 * @offset: offset of mapping relative to pfn

 * @size: length of the mapping

 * @type: single, page, sg, coherent

 * @direction: enum dma_data_direction

 * @sg_call_ents: 'nents' from dma_map_sg

 * @sg_mapped_ents: 'mapped_ents' from dma_map_sg

 * @pfn: page frame of the start address

 * @offset: offset of mapping relative to pfn

 * @map_err_type: track whether dma_mapping_error() was checked

 * @stacktrace: support backtraces when a violation is detected

 */

struct dma_debug_entry {

	struct list_head list;

	struct device    *dev;

	int              type;

	unsigned long	 pfn;

	size_t		 offset;

	u64              dev_addr;

	u64              size;

	int              type;

	int              direction;

	int		 sg_call_ents;

	int		 sg_mapped_ents;

	unsigned long	 pfn;

	size_t		 offset;

	enum map_err_types  map_err_type;

#ifdef CONFIG_STACKTRACE

	unsigned int	stack_len;

	unsigned long	stack_entries[DMA_DEBUG_STACKTRACE_ENTRIES];

#endif

};

} ____cacheline_aligned_in_smp;

typedef bool (*match_fn)(struct dma_debug_entry *, struct dma_debug_entry *);