linaro-base.conf: enable GPIO_SYSFS

It's required by powerdebug.

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
diff --git a/linaro/configs/linaro-base.conf b/linaro/configs/linaro-base.conf
index 8526bdf..13f7866f 100644
--- a/linaro/configs/linaro-base.conf
+++ b/linaro/configs/linaro-base.conf
@@ -50,6 +50,7 @@
 CONFIG_MTD_CFI_INTELEXT=y
 CONFIG_MTD_NAND=y
 CONFIG_NETDEVICES=y
+CONFIG_GPIO_SYSFS=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT3_FS=y
 CONFIG_EXT4_FS=y