powerpc/configs/64s: Enable AUDIT

Essentially all distros enable it.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230414132415.821564-9-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=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_BPF_SYSCALL=y