sched: programmable: Fix build error for nr_cpus_ids

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I645C7


CVE: NA

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When !CONFIG_SMP && CONFIG_BPF_SCHED, it will build error, as follows:

./include/linux/cpumask.h:37:33: error: expected identifier or ‘(’ before numeric constant
   37 | #define nr_cpu_ids              1U
      |                                 ^~
./include/linux/bpf_topology.h:39:22: note: in expansion of macro ‘nr_cpu_ids’
   39 |         unsigned int nr_cpu_ids;
      |                      ^~~~~~~~~~
kernel/sched/bpf_topology.c: In function ‘____bpf_get_cpumask_info’:
./include/linux/cpumask.h:37:33: error: expected identifier before numeric constant
   37 | #define nr_cpu_ids              1U
      |                                 ^~
kernel/sched/bpf_topology.c:75:15: note: in expansion of macro ‘nr_cpu_ids’
   75 |         cpus->nr_cpu_ids = nr_cpu_ids;

Fixes: f333bd68 ("sched: programmable: Add helper function for...")
Signed-off-by: Hui Tang <tanghui20@huawei.com>