linux & firmware update 4.19.75

[popoviciri]

In previous 4.19.71, the 10th enum was added to v4l2 awb controls. So one can finally set greyworld mode via v4l2-ctl command now:

v4l2-ctl --verbose -c white_balance_auto_preset=10
VIDIOC_QUERYCAP: ok
VIDIOC_S_EXT_CTRLS: ok

Ref here: raspberrypi/firmware#1225
Further, streameye.sh can easily be updated to include this setting for /dev/vide0. Though that might not be needed anymore with @jasaw ' s latest work.

[ccrisan]

Can we please always go with the latest stable version of the firmware and its corresponding kernel git hash?

Minimizing differences between thingOS(-based OSes) and Raspbian, when it comes to firmware and kernel, makes our life a bit easier :)

[popoviciri]

Apologies @ccrisan. I thought I did! I'll push the correct firmware in a bit. The kernel hash is correct though. Cheers!

[ccrisan]

Thanks!