Use OE reference qemuarm

 -Replace qemuphosphor sample bsp with reference qemuarm.
 -Pull in phosphor features via local.conf
diff --git a/conf/conf-notes.txt b/conf/conf-notes.txt
index 3570355..f2db15f 100644
--- a/conf/conf-notes.txt
+++ b/conf/conf-notes.txt
@@ -2,5 +2,4 @@
      obmc-phosphor-image
 
 You can also run generated qemu images with a command like:
-     idir=tmp/deploy/images/qemuphosphor
-     runqemu qemuarm $idir/zImage-qemuphosphor.bin $idir/obmc-phosphor-image-qemuphosphor.ext4
+     runqemu qemuarm