package/openocd: add optional dependency on libgpiod

To make the Linux GPIOD bitbang adapter driver through libgpiod
available.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski@armadeus.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

package/openocd/openocd.mk

@@ -32,7 +32,8 @@ OPENOCD_DEPENDENCIES = \
 	$(if $(BR2_PACKAGE_LIBUSB),libusb) \
 	$(if $(BR2_PACKAGE_LIBUSB_COMPAT),libusb-compat) \
 	$(if $(BR2_PACKAGE_LIBHID),libhid) \
-	$(if $(BR2_PACKAGE_HIDAPI),hidapi)
+	$(if $(BR2_PACKAGE_HIDAPI),hidapi) \
+	$(if $(BR2_PACKAGE_LIBGPIOD),libgpiod)
 
 # Adapters
 OPENOCD_CONF_OPTS += \