powerpc/pseries: Read of-config partition via pstore

This patch set exploits the pstore subsystem to read details of
of-config partition in NVRAM to a separate file in /dev/pstore.
For instance, of-config partition details will be stored in a
file named [of-nvram-5].

Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Reviewed-by: Jim Keniston <jkenisto@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
diff --git a/include/linux/pstore.h b/include/linux/pstore.h
index d7a8fe9..615dc18 100644
--- a/include/linux/pstore.h
+++ b/include/linux/pstore.h
@@ -37,6 +37,7 @@
 	PSTORE_TYPE_FTRACE	= 3,
 	/* PPC64 partition types */
 	PSTORE_TYPE_PPC_RTAS	= 4,
+	PSTORE_TYPE_PPC_OF	= 5,
 	PSTORE_TYPE_UNKNOWN	= 255
 };