phosphor: hwmon: add missing stdplus dependency

Add missing dependency on stdplus in recipe.

(From meta-phosphor rev: 9d2aa344187192fb0e1af85b0119a0332822f831)

Signed-off-by: Patrick Venture <venture@google.com>
Change-Id: Ic05259a05db8fe0420cec4a17739aa79e8f66778
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
index 3207df4..5ccf99c 100644
--- a/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
+++ b/meta-phosphor/recipes-phosphor/sensors/phosphor-hwmon_git.bb
@@ -18,6 +18,7 @@
 DEPENDS += " \
         sdbusplus \
         sdeventplus \
+        stdplus \
         phosphor-dbus-interfaces \
         phosphor-logging \
         gpioplus \