Change ro to rofs.

- The bmc read only file systems volumes are named rofs-<versionId>.
- This will fix the issue that prevented item_updater from creating
  the bmc versionIds after a reboot.

Resolves openbmc/openbmc#2267

Change-Id: I26034cbb8928baba8e551aff795f87a0e2c4a262
Signed-off-by: Saqib Khan <khansa@us.ibm.com>
diff --git a/configure.ac b/configure.ac
index 64f9a9d..408fc29 100755
--- a/configure.ac
+++ b/configure.ac
@@ -83,7 +83,7 @@
     [The name of the BMC table of contents file])
 AC_DEFINE(MEDIA_DIR, "/media/",
     [The base dir where all RO partitions are mounted])
-AC_DEFINE(BMC_RO_PREFIX, "/media/ro-",
+AC_DEFINE(BMC_ROFS_PREFIX, "/media/rofs-",
     [The prefix path for the versioned read-only bmc partitions])
 AC_DEFINE(PERSIST_DIR, "/var/lib/obmc/phosphor-bmc-code-mgmt/",
     [The dir where activation data is stored in files])