exofs: Rename struct ore_components comps => oc

ore_components already has a comps member so this leads
to things like comps->comps which is annoying. the name oc
was already used in new code. So rename all old usage of
ore_components comps => ore_components oc.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
diff --git a/include/scsi/osd_ore.h b/include/scsi/osd_ore.h
index c5c5e00..954292a 100644
--- a/include/scsi/osd_ore.h
+++ b/include/scsi/osd_ore.h
@@ -64,7 +64,7 @@
 	ore_io_done_fn	done;
 
 	struct ore_layout	*layout;
-	struct ore_components	*comps;
+	struct ore_components	*oc;
 
 	/* Global read/write IO*/
 	loff_t			offset;