Wake stub cannot link ets_update_cpu_frequency_rom

[owenjames]

I need to call ets_update_cpu_frequency_rom() in my wake stub (per https://esp32.com/viewtopic.php?f=13&t=16861) but I can't fix this link error:
undefined reference to `ets_update_cpu_frequency_rom'

I can resolve est_delay_us() so am confident that I'm linking in the esp_rom component. My build is esp32s3.