ARM: at91/boards: use -EINVAL for invalid gpio

this will allow to use gpio_is_valid

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/board-ecbat91.c b/arch/arm/mach-at91/board-ecbat91.c
index af7622e..69966ce 100644
--- a/arch/arm/mach-at91/board-ecbat91.c
+++ b/arch/arm/mach-at91/board-ecbat91.c
@@ -71,11 +71,16 @@
 
 static struct at91_usbh_data __initdata ecb_at91usbh_data = {
 	.ports		= 1,
+	.vbus_pin	= {-EINVAL, -EINVAL},
+	.overcurrent_pin= {-EINVAL, -EINVAL},
 };
 
 static struct at91_mmc_data __initdata ecb_at91mmc_data = {
 	.slot_b		= 0,
 	.wire4		= 1,
+	.det_pin	= -EINVAL,
+	.wp_pin		= -EINVAL,
+	.vcc_pin	= -EINVAL,
 };