p9_xip_customize -- consume correct byte for AW keyword PLL bucket selector

initial release consumed byte 0 as the bucket selector, which is reserved
for the keyword version

update customization HWP to consume byte 1 as the selector

Change-Id: Id7177fe7f7334d4c044e2110390f3b11477a3ae6
CQ: SW417993
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54370
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Tested-by: HWSV CI <hwsv-ci+hostboot@us.ibm.com>
Tested-by: Hostboot CI <hostboot-ci+hostboot@us.ibm.com>
Reviewed-by: Thi N. Tran <thi@us.ibm.com>
Reviewed-by: Claus M. Olsen <cmolsen@us.ibm.com>
Reviewed-by: Jennifer A. Stofer <stofer@us.ibm.com>
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/54383
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP HW <op-hw-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

Author: jjmcgill

src/import/chips/p9/procedures/hwp/customize/p9_xip_customize.C

@@ -2008,7 +2008,7 @@ ReturnCode p9_xip_customize (
                   (uint64_t)fapi2::current_err );
 
         // extract data
-        l_filterPllBucket = (uint8_t)(*l_bufMvpdField);
+        l_filterPllBucket = (uint8_t)(*(l_bufMvpdField + 1));
 
         FAPI_ASSERT( l_filterPllBucket <= MAX_FILTER_PLL_BUCKETS,
                      fapi2::XIPC_MVPD_AW_FIELD_VALUE_ERR().