introduce new extra-dev-debug-tools distro feature

For systems with extra flash space, including some additional developer
debug tools can be useful. Instead of having everyone hand code them
into their obmc-apps bbappend files, provide a common include that will
bring them in.

Change-Id: I91a1b29ab4a4ff2efaaf5ea5dfbafd83781168df
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-phosphor/conf/distro/include/extra-dev-debug-tools.inc b/meta-phosphor/conf/distro/include/extra-dev-debug-tools.inc
new file mode 100644
index 0000000..66a156c
--- /dev/null
+++ b/meta-phosphor/conf/distro/include/extra-dev-debug-tools.inc
@@ -0,0 +1 @@
+DISTRO_FEATURES += "extra-dev-debug-tools"