configs: enable CONFIG_FTRACE_SYSCALLS on x86_64 kernel

Previous commit d1e3ca10350f ("configs: enable CONFIG_FTRACE_SYSCALLS")
enables CONFIG_FTRACE_SYSCALLS only on x86_64 debug kernel.

Now enable CONFIG_FTRACE_SYSCALLS on x86_64 kernel as well.
Signed-off-by: NJeffle Xu <jefflexu@linux.alibaba.com>
Acked-by: NJoseph Qi <joseph.qi@linux.alibaba.com>

config-4.19.y-x86_64

@@ -4243,7 +4243,7 @@ CONFIG_FUNCTION_GRAPH_TRACER=y
 # CONFIG_IRQSOFF_TRACER is not set
 # CONFIG_SCHED_TRACER is not set
 # CONFIG_HWLAT_TRACER is not set
-# CONFIG_FTRACE_SYSCALLS is not set
+CONFIG_FTRACE_SYSCALLS=y
 # CONFIG_TRACER_SNAPSHOT is not set
 CONFIG_BRANCH_PROFILE_NONE=y
 # CONFIG_PROFILE_ANNOTATED_BRANCHES is not set