phosphor-power: add libgpiod DEPENDS

The phosphor-power-supply source tree for building phosphor-psu-monitor
will be updated to use the C++ version of the libgpiod interfaces in
order to read GPIO lines for power supply presence detection.

Change-Id: Id06c5e5f1bc34ac130d3def4d647bb2e8e2852de
Signed-off-by: B. J. Wyman <bjwyman@gmail.com>
diff --git a/meta-phosphor/recipes-phosphor/power/phosphor-power_git.bb b/meta-phosphor/recipes-phosphor/power/phosphor-power_git.bb
index a01a997..e9e5f3e 100644
--- a/meta-phosphor/recipes-phosphor/power/phosphor-power_git.bb
+++ b/meta-phosphor/recipes-phosphor/power/phosphor-power_git.bb
@@ -39,6 +39,7 @@
          ${PYTHON_PN}-setuptools-native \
          ${PYTHON_PN}-mako-native \
          boost \
+         libgpiod \
          "
 
 # The monitor package uses an org.open_power D-Bus interface and so