stuck at boot on aarch64 device(Qualcomm sc8280xp)

Hi,

I can't boot on my device, this tablet is shipped with sc8280xp(qualcomm 8cx gen3). When I startup, the screen shows the following

```

disk: sd0* sd1 sd2    >> OpenBSD/arm64 BOOTAA64 1.18    boot>    cannot open sd0a:/etc/random.seed: No such file or directory    booting sd0a:/bsd: 3023768+1214656+12712936+633232 [269381+91+701664+287051]=0x13edb50    FACP SSDT BGRT CSRT DBG2 GTDT IORT APIC MCFG PPTT SPCR TPM2 MSDM DLUT BGRT FPDT  

```

But I found the post of OpenBSD, it mentioned that OpenBSD has supported SC8280xp devices since 7.2.

The acpi tables which show on the screen(FACP SSDT ... ), you can find here.

Any comments are welcome.

Thanks.