oem_ibm: Move the NVRAM files to the hostfw directory

This commit would :
- Move the NVRAM files from /var/ on the BMC to the hostfw directory so
  that they don't get erased during a BMC factory reset.

- To help migrate existing systems, check if the files exist in /var/,
  and if they do, move them to the hostfw destination.

- This also adds dependent services that ensure that the links being
  setup correctly in var/lib/phosphor-software-manager/hostfw/ is run
  first.

- The services to clear PHYP NVRAM are not needed anymore. Instead of
  the BMC clearing them, the hypervisor will now clear them if the
  pvm_clear_nvram bios attribute is set.

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: If8da88347a82d212b30c3cb6354037b62887c67c
diff --git a/oem/ibm/configurations/fileTable.json b/oem/ibm/configurations/fileTable.json
index 5b68a03..2f1d8f5 100644
--- a/oem/ibm/configurations/fileTable.json
+++ b/oem/ibm/configurations/fileTable.json
@@ -1,10 +1,10 @@
 [
    {
-      "path":"/var/lib/pldm/PHYP-NVRAM",
+      "path":"/var/lib/phosphor-software-manager/hostfw/nvram/PHYP-NVRAM",
       "file_traits":1
    },
    {
-      "path":"/var/lib/pldm/PHYP-NVRAM-CKSUM",
+      "path":"/var/lib/phosphor-software-manager/hostfw/nvram/PHYP-NVRAM-CKSUM",
       "file_traits":4
    },
    {