powerpc/pseries: Distinguish between a os-partition and non-os partition

Introduce os_partition member in nvram_os_partition structure to identify
if the partition is an os partition or not. This will be useful to handle
non-os partitions of-config and common.
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>

arch/powerpc/platforms/pseries/nvram.c

@@ -53,20 +53,23 @@ struct nvram_os_partition {
 	int min_size;	/* minimum acceptable size (0 means req_size) */
 	long size;	/* size of data portion (excluding err_log_info) */
 	long index;	/* offset of data portion of partition */
+	bool os_partition; /* partition initialized by OS, not FW */
 };
 
 static struct nvram_os_partition rtas_log_partition = {
 	.name = "ibm,rtas-log",
 	.req_size = 2079,
 	.min_size = 1055,
-	.index = -1
+	.index = -1,
+	.os_partition = true
 };
 
 static struct nvram_os_partition oops_log_partition = {
 	.name = "lnx,oops-log",
 	.req_size = 4000,
 	.min_size = 2000,
-	.index = -1
+	.index = -1,
+	.os_partition = true
 };
 
 static const char *pseries_nvram_os_partitions[] = {