powerpc/configs/64s: Enable NO_HZ_FULL

At least Fedora & SUSE enable it.

VIRT_CPU_ACCOUNTING_GEN is selected so no longer needs to be in the
defconfig.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230414132415.821564-11-mpe@ellerman.id.au

arch/powerpc/configs/ppc64_defconfig

 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
-# CONFIG_CONTEXT_TRACKING_USER_FORCE is not set
 CONFIG_AUDIT=y
+CONFIG_NO_HZ_FULL=y
 CONFIG_NO_HZ=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y
 CONFIG_BPF_JIT=y
 CONFIG_PREEMPT_VOLUNTARY=y
-CONFIG_VIRT_CPU_ACCOUNTING_GEN=y
 CONFIG_BSD_PROCESS_ACCT=y
 CONFIG_BSD_PROCESS_ACCT_V3=y
 CONFIG_TASKSTATS=y