Add phosphor-defaults.conf

Add a global default configuration file for Phosphor, with
purpose similar to default-distrovars.inc.

Change-Id: I7b212f6025d5ce8c40f02abccfd9f998275bc281
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/conf/distro/openbmc-phosphor.conf b/meta-phosphor/conf/distro/openbmc-phosphor.conf
index e9de087..a942f71 100644
--- a/meta-phosphor/conf/distro/openbmc-phosphor.conf
+++ b/meta-phosphor/conf/distro/openbmc-phosphor.conf
@@ -1,4 +1,5 @@
 require conf/distro/poky.conf
+require conf/distro/include/phosphor-defaults.inc
 
 DISTRO = "openbmc-phosphor"
 DISTRO_NAME = "Phosphor OpenBMC (Phosphor OpenBMC Project Reference Distro)"