Whitespace fixes for obmc-rest.bb

OE style guidelines dictate no tabs.
diff --git a/meta-phosphor/common/recipes-phosphor/dbus/obmc-rest.bb b/meta-phosphor/common/recipes-phosphor/dbus/obmc-rest.bb
index f66dd26..944199f 100644
--- a/meta-phosphor/common/recipes-phosphor/dbus/obmc-rest.bb
+++ b/meta-phosphor/common/recipes-phosphor/dbus/obmc-rest.bb
@@ -13,10 +13,10 @@
         python-xml \
         python-dbus \
         python-pygobject \
-	obmc-mapper \
-	python-rocket \
-	python-bottle \
-	python-spwd \
+        obmc-mapper \
+        python-rocket \
+        python-bottle \
+        python-spwd \
         "
 SRC_URI += "git://github.com/openbmc/phosphor-rest-server"