ARM: mach-shmobile: mackerel: Add FSI DMAEngine support

We need undocumented address to use DMA.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

arch/arm/mach-shmobile/board-mackerel.c

@@ -908,6 +908,8 @@ static int fsi_b_set_rate(struct device *dev, int rate, int enable)
 static struct sh_fsi_platform_info fsi_info = {
 	.port_a = {
 		.flags = SH_FSI_BRS_INV,
+		.tx_id = SHDMA_SLAVE_FSIA_TX,
+		.rx_id = SHDMA_SLAVE_FSIA_RX,
 	},
 	.port_b = {
 		.flags = SH_FSI_BRS_INV	|
@@ -920,9 +922,11 @@ static struct sh_fsi_platform_info fsi_info = {
 
 static struct resource fsi_resources[] = {
 	[0] = {
+		/* we need 0xFE1F0000 to access DMA
+		 * instead of 0xFE3C0000 */
 		.name	= "FSI",
-		.start	= 0xFE3C0000,
-		.end	= 0xFE3C0400 - 1,
+		.start  = 0xFE1F0000,
+		.end    = 0xFE1F0400 - 1,
 		.flags	= IORESOURCE_MEM,
 	},
 	[1] = {