selftests: gpio: gpio-sim: Use same variable name for sysfs pathname

SYSFS_PATH can be used locally and globally, especially that has
the same content.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: andy-shev

tools/testing/selftests/gpio/gpio-sim.sh

@@ -152,9 +152,9 @@ sysfs_set_pull() {
 	local PULL=$4
 	local DEVNAME=`configfs_dev_name $DEV`
 	local CHIPNAME=`configfs_chip_name $DEV $BANK`
-	local SYSFSPATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/pull"
+	local SYSFS_PATH="/sys/devices/platform/$DEVNAME/$CHIPNAME/sim_gpio$OFFSET/pull"
 
-	echo $PULL > $SYSFSPATH || fail "Unable to set line pull in sysfs"
+	echo $PULL > $SYSFS_PATH || fail "Unable to set line pull in sysfs"
 }
 
 # Load the gpio-sim module. This will pull in configfs if needed too.