overall, after staring at it a bit, I found 132 the most readable. I find breaking strings and folding parameters to adhere to 80 column limits very irritating. I don't think that's just me.

if you look at the changes, it's not huge. In some cases, e.g. https://review.coreboot.org/#/c/coreboot/+/26512/2/src/arch/riscv/mcall.c, IMHO the result is a dramatic improvement in readability and use of vertical space. 

Note that in one place I turned formatting off. I don't think we want to make a habit of this, but thought the demo was useful.

ron