[ARM] 4010/1: AT91SAM9260-EK board: Prepare for MACB Ethernet support

Add PHY IRQ pin definition for AT91SAM9260-EK board.

Signed-off-by: Wojtek Kaniewski <[e-mail]>
Signed-off-by: Andrew Victor <[e-mail]>
Signed-off-by: Russell King <[e-mail]>

arch/arm/mach-at91rm9200/board-sam9260ek.c

···
  * MACB Ethernet device
  */
 static struct __initdata eth_platform_data ek_macb_data = {
+	.phy_irq_pin	= AT91_PIN_PA7,
 	.is_rmii	= 1,
 };