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-carmeva.c b/arch/arm/mach-at91/board-carmeva.c
index 529b356..59d9cf9 100644
--- a/arch/arm/mach-at91/board-carmeva.c
+++ b/arch/arm/mach-at91/board-carmeva.c
@@ -64,6 +64,8 @@
 
 static struct at91_usbh_data __initdata carmeva_usbh_data = {
 	.ports		= 2,
+	.vbus_pin	= {-EINVAL, -EINVAL},
+	.overcurrent_pin= {-EINVAL, -EINVAL},
 };
 
 static struct at91_udc_data __initdata carmeva_udc_data = {
@@ -75,8 +77,8 @@
 // static struct at91_cf_data __initdata carmeva_cf_data = {
 //	.det_pin	= AT91_PIN_PB0,
 //	.rst_pin	= AT91_PIN_PC5,
-	// .irq_pin	= ... not connected
-	// .vcc_pin	= ... always powered
+	// .irq_pin	= -EINVAL,
+	// .vcc_pin	= -EINVAL,
 // };
 
 static struct at91_mmc_data __initdata carmeva_mmc_data = {
@@ -84,6 +86,7 @@
 	.wire4		= 1,
 	.det_pin	= AT91_PIN_PB10,
 	.wp_pin		= AT91_PIN_PC14,
+	.vcc_pin	= -EINVAL,
 };
 
 static struct spi_board_info carmeva_spi_devices[] = {