Fix genHwsvMrwXml.pl setting of MSS_MRW_REFRESH_RATE_REQUEST
Fix genHwsvMrwXml.pl setting of MSS_MRW_REFRESH_RATE_REQUEST

The SINGLE and DOUBLE translations of the enumeration didn't
match the expected value in memory_mrw_attributes.xml

Change-Id: Id2d56fcbb4aa7566b87e8894e3ba80cbcd030a01
CQ: SW408323
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/49863
Reviewed-by: Prachi Gupta <25a72946fc4ec2539bba3cff1fbb2916af6a7649@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Elizabeth K. Liner <2cf7b278f097e7e2abe996aafb02aa8116b785d6@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: Jenkins OP HW <0eb0fff262f74a65a832afbcc7b153e391c9a3fd@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

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