Update VPD flags in HB witherspoon config file

- Use MEMVPD config flag instead of CVPD
- Use DJVPD_WRITE_TO_HW
diff --git a/openpower/configs/hostboot/witherspoon.config b/openpower/configs/hostboot/witherspoon.config
index 5e1197d..53210bd 100755
--- a/openpower/configs/hostboot/witherspoon.config
+++ b/openpower/configs/hostboot/witherspoon.config
@@ -12,15 +12,15 @@
 set MVPD_READ_FROM_PNOR
 set MVPD_WRITE_TO_PNOR
 set DJVPD_READ_FROM_HW
-unset DJVPD_WRITE_TO_HW
+set DJVPD_WRITE_TO_HW
 set DJVPD_READ_FROM_PNOR
 set DJVPD_WRITE_TO_PNOR
-set CVPD_READ_FROM_HW
-set CVPD_WRITE_TO_HW
-set CVPD_READ_FROM_PNOR
-set CVPD_WRITE_TO_PNOR
-set PVPD_READ_FROM_HW
-set PVPD_WRITE_TO_HW
+unset MEMVPD_READ_FROM_HW
+unset MEMVPD_WRITE_TO_HW
+set MEMVPD_READ_FROM_PNOR
+set MEMVPD_WRITE_TO_PNOR
+unset PVPD_READ_FROM_HW
+unset PVPD_WRITE_TO_HW
 set PVPD_READ_FROM_PNOR
 set PVPD_WRITE_TO_PNOR
 unset CDIMM_FORMAT_FOR_CVPD