Blackfin arch: Fix bug - set corret SSEL and IRQ to enable AD7877 on BF527

AD7877 use SSEL_2 (P9.9) and IRQ_PF8 (P9.14) on BF527

- populating JP3 to enable STAMP
- disable SW11.2 to disconnect SSEL_2/PF12 from Rotary NAND
- disable SW18.1 to disconnect SSEL_2 from MAX1233 touchscreen chip

Signed-off-by: Bryan Wu <[e-mail]>

arch/blackfin/mach-bf527/boards/ezkit.c

···
 	{
 		.modalias		= "ad7877",
 		.platform_data		= &bfin_ad7877_ts_info,
-		.irq			= IRQ_PF6,
+		.irq			= IRQ_PF8,
 		.max_speed_hz	= 12500000,     /* max spi clock (SCK) speed in HZ */
 		.bus_num	= 0,
-		.chip_select  = 1,
+		.chip_select  = 2,
 		.controller_data = &spi_ad7877_chip_info,
 	},
 #endif