Blackfin: clean up isp1362 board resources

Drop the CONFIG_USB_ISP1362_BFIN_GPIO_IRQ Kconfig as it never made it into
mainline and it was a bad interface into the board resources.  For boards
that actually used this, replace it with an actual IRQ define.  For boards
that didn't, simply drop the resources.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-bf537/boards/stamp.c b/arch/blackfin/mach-bf537/boards/stamp.c
index 6a09b71..514d994 100644
--- a/arch/blackfin/mach-bf537/boards/stamp.c
+++ b/arch/blackfin/mach-bf537/boards/stamp.c
@@ -272,8 +272,8 @@
 		.end = 0x20360004,
 		.flags = IORESOURCE_MEM,
 	}, {
-		.start = CONFIG_USB_ISP1362_BFIN_GPIO_IRQ,
-		.end = CONFIG_USB_ISP1362_BFIN_GPIO_IRQ,
+		.start = IRQ_PF3,
+		.end = IRQ_PF3,
 		.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
 	},
 };