CVE-2023-52827

In the Linux kernel, the following vulnerability has been resolved: wifi:
ath12k: fix possible out-of-bound read in ath12k_htt_pull_ppdu_stats() len
is extracted from HTT message and could be an unexpected value in case
errors happen, so add validation before using to avoid possible
out-of-bound read in the following message iteration and parsing. The same
issue also applies to ppdu_info->ppdu_stats.common.num_users, so validate
it before using too. These are found during code review. Compile test only.