sound fixes for 5.2-rc3

No big surprises here, just a few device-specific fixes.

HD-audio received several fixes for Acer, Dell, Huawei and other
laptops as well as the workaround for the new Intel chipset.
One significant one-liner fix is the disablement of the node-power
saving on Realtek codecs, which may potentially cover annoying bugs
like the background noises or click noises on many devices.

Other than that, a fix for FireWire bit definitions, and another fix
for LINE6 USB audio bug that was discovered by syzkaller.
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