Hi Sakthivel,
I just heard from one of our SW engineers as follows:

Yes
https://docs.modalai.com/voxl2-linux-user-guide/#spi0---camera-group-0-spi
However, we are going to change J8 to a UART in next release.
The current download available is Voxl2 Platform Release 1.2.1-0.7 from downloads.modalai.com
release notes: https://docs.modalai.com/voxl2-system-image/#121
as of 1.2.0 the J6 and J7 SPI are available. J8 is too now, but next release it will become a UART.

We will update our docs accordingly, and I think we have future plans to make J6-J8 buildable by the end user as either SPI or UART. So this switch of J8 to UART is likely a temporary one for users.