meta-ibm: introduce new pstbmc machine

The pstbmc machine (the acronym meaning is still confidential) will be
IBMs next generation server line.

For now, just have it based on p10bmc.

Change-Id: If980484b3acc44455f558661247886a15955c6bb
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-ibm/conf/machine/pstbmc.conf b/meta-ibm/conf/machine/pstbmc.conf
new file mode 100644
index 0000000..616663e
--- /dev/null
+++ b/meta-ibm/conf/machine/pstbmc.conf
@@ -0,0 +1,2 @@
+MACHINEOVERRIDES =. "p10bmc:"
+require conf/machine/p10bmc.conf