CONFIG_PARAVIRT_TIME_ACCOUNTING is not available for the selected architecture x86.
Result is shown for architecture powerpc

CONFIG_PARAVIRT_TIME_ACCOUNTING (not configurable)

configname: CONFIG_PARAVIRT_TIME_ACCOUNTING

Linux Kernel Configuration
└─>PARAVIRT_TIME_ACCOUNTING
In linux kernel since version 3.1 (release Date: 2011-10-24)
selects
CONFIG_PARAVIRT