dmaengine: pl08x: Add support for the DMA slave map

This patch adds support for the new channel request API introduced
in commit a8135d0d79
"dmaengine: core: Introduce new, universal API to request a channel".

param field of struct dma_slave_map type entries in the platform
data structure should be pointing to struct pl08x_channel_data
of related DMA channel.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

include/linux/amba/pl08x.h

@@ -84,6 +84,8 @@ struct pl08x_channel_data {
  * running any DMA transfer and multiplexing can be recycled
  * @lli_buses: buses which LLIs can be fetched from: PL08X_AHB1 | PL08X_AHB2
  * @mem_buses: buses which memory can be accessed from: PL08X_AHB1 | PL08X_AHB2
+ * @slave_map: DMA slave matching table
+ * @slave_map_len: number of elements in @slave_map
  */
 struct pl08x_platform_data {
 	struct pl08x_channel_data *slave_channels;
@@ -93,6 +95,8 @@ struct pl08x_platform_data {
 	void (*put_xfer_signal)(const struct pl08x_channel_data *, int);
 	u8 lli_buses;
 	u8 mem_buses;
+	const struct dma_slave_map *slave_map;
+	int slave_map_len;
 };
 
 #ifdef CONFIG_AMBA_PL08X