MDIA: Update getting memSize in setup
MDIA: Update getting memSize in setup

Change-Id: I5bfb4a5addc7b38ae22f035a8589c470f21d0cd7
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/31167
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Zane C. Shelley <fc96e127d170d6ac0b2af86a8a56f95974ff36e8@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot