meta-facebook: minerva: enable mdio-tools

Enable mdio-tools for communication with the PHY chip.

Change-Id: I4c595fc82018648472f2cf985b6afd386c5290ef
Signed-off-by: Yang Chen <yang.chen@quantatw.com>
diff --git a/meta-facebook/meta-minerva/recipes-phosphor/images/fb-minerva-phosphor-image.inc b/meta-facebook/meta-minerva/recipes-phosphor/images/fb-minerva-phosphor-image.inc
index fa52669..b2c1b32 100644
--- a/meta-facebook/meta-minerva/recipes-phosphor/images/fb-minerva-phosphor-image.inc
+++ b/meta-facebook/meta-minerva/recipes-phosphor/images/fb-minerva-phosphor-image.inc
@@ -31,3 +31,8 @@
 OBMC_IMAGE_EXTRA_INSTALL:append = " \
     phosphor-state-manager \
 "
+
+# Enable mdio-tools for communication with the PHY chip
+OBMC_IMAGE_EXTRA_INSTALL:append = " \
+    mdio-tools \
+"