Blackfin: update AD7879 resources to match the new gpiolib driver support

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/arch/blackfin/mach-bf538/boards/ezkit.c b/arch/blackfin/mach-bf538/boards/ezkit.c
index d2d06f0..1a1f658 100644
--- a/arch/blackfin/mach-bf538/boards/ezkit.c
+++ b/arch/blackfin/mach-bf538/boards/ezkit.c
@@ -518,8 +518,8 @@
 	.median			= 2,	/* do 8 measurements */
 	.averaging 		= 1,	/* take the average of 4 middle samples */
 	.pen_down_acc_interval 	= 255,	/* 9.4 ms */
-	.gpio_output		= 1,	/* configure AUX/VBAT/GPIO as GPIO output */
-	.gpio_default 		= 1,	/* During initialization set GPIO = HIGH */
+	.gpio_export		= 1,	/* Export GPIO to gpiolib */
+	.gpio_base		= -1,	/* Dynamic allocation */
 };
 #endif