meta-phosphor: distro-base: add DISTROOVERRIDES

152695448 removed our openbmc-phosphor distro override.  This had
minimal or no impact because distro overrides based on the DISTRO aren't
being used as they should.  Add a distro override so they can be used
where appropriate (e.g. oe-core bbappends).

Change-Id: I9197d2a6ed6a2dc4a1f1bea08b2c7441de1e037c
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/conf/distro/include/phosphor-base.inc b/conf/distro/include/phosphor-base.inc
index 4da31b7..ff4c4d2 100644
--- a/conf/distro/include/phosphor-base.inc
+++ b/conf/distro/include/phosphor-base.inc
@@ -8,6 +8,8 @@
 DISTRO_EXTRA_RDEPENDS += " ${POKY_DEFAULT_EXTRA_RDEPENDS}"
 DISTRO_EXTRA_RRECOMMENDS += " ${POKY_DEFAULT_EXTRA_RRECOMMENDS}"
 
+DISTROOVERRIDES .= ":openbmc-phosphor"
+
 POKYQEMUDEPS = "${@bb.utils.contains("INCOMPATIBLE_LICENSE", "GPL-3.0", "", "packagegroup-core-device-devel",d)}"
 DISTRO_EXTRA_RDEPENDS_append_qemuarm = " ${POKYQEMUDEPS}"
 DISTRO_EXTRA_RDEPENDS_append_qemuarm64 = " ${POKYQEMUDEPS}"