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).

(From meta-phosphor rev: 1b9a74965ae664726e82ff7941b2d046392fb0f3)

Change-Id: I7ae07ac26c2ea4882d3b1b002b340f53d885c1e8
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/conf/distro/include/phosphor-base.inc b/meta-phosphor/conf/distro/include/phosphor-base.inc
index 4da31b7..ff4c4d2 100644
--- a/meta-phosphor/conf/distro/include/phosphor-base.inc
+++ b/meta-phosphor/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}"