Hardware support for aarch64 pi 4 rev 1.5?

[JSeligstein]

Hi there. Trying to get my raspberry pi 4 rev 1.5 working.

I tried following the instructions in #483, but my revision already seems to be in code.

Output from /cat/procinfo:

Hardware : BCM2835
Revision : c03115
Model : Raspberry Pi 4 Model B Rev 1.5

However, when browsing the code, rpi_hw_detect seems to do a different path for aarch64, which is my version. Is there a fix for this version on aarch64?

Thank you!