[coreboot] Baytrail How to enable PM1_STS_EN.PCIEXP_WAKE_EN register bit

[Gailu Singh]

Hi Experts,

I need to enable power management register bit (PM1_STS_EN.PCIEXP_WAKE_EN)
of baytrail. I searched for PM1_STS_EN in the source but didn't find
anything related to that. Any suggestion how to do it?

Best Regards