sh: espt evt2irq migration.

Migrate espt to evt2irq() backed hwirq lookups.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/board-espt.c

@@ -14,6 +14,7 @@
 #include <linux/mtd/physmap.h>
 #include <linux/io.h>
 #include <linux/sh_eth.h>
+#include <linux/sh_intc.h>
 #include <asm/machvec.h>
 #include <asm/sizes.h>
 
@@ -71,7 +72,7 @@ static struct resource sh_eth_resources[] = {
 		.flags  = IORESOURCE_MEM,
 	}, {
 
-		.start  = 57,   /* irq number */
+		.start  = evt2irq(0x920),   /* irq number */
 		.flags  = IORESOURCE_IRQ,
 	},
 };