ARM: shmobile: mackerel: Add FLCTL IRQ resource

Since commit 3c7ea4e (mtd: sh_flctl: Add support for error IRQ)
the sh_flctl driver requires the error IRQ line to signal failed
transactions between the flash controller and the NAND chip.
This information is mandatory - else the driver refuses to start
up. We provide it here for the board mackerel.

Signed-off-by: Bastian Hecht <hechtb@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

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

@@ -950,7 +950,11 @@ static struct resource nand_flash_resources[] = {
 		.start	= 0xe6a30000,
 		.end	= 0xe6a3009b,
 		.flags	= IORESOURCE_MEM,
-	}
+	},
+	[1] = {
+		.start	= evt2irq(0x0d80), /* flstei: status error irq */
+		.flags	= IORESOURCE_IRQ,
+	},
 };
 
 static struct sh_flctl_platform_data nand_flash_data = {