Add istep boot support for Open Power system

Change-Id: I9109a21f16c50a093b18e2e2f51699217fb168a4
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/data/boot_lists/All b/data/boot_lists/All
index a77d00d..650c52b 100755
--- a/data/boot_lists/All
+++ b/data/boot_lists/All
@@ -67,3 +67,4 @@
 Out of Band Code Update
 OS Code Update
 OPAL TI
+Istep Power On