[op-tee] Maximum line length in the Linux kernel

FYI, the "80 column" rule has just evolved a bit:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...

So it is now s "<= 80 columns preferred, but up to 100 is OK". Since we are mostly following the Linux coding style, I think this should apply to OP-TEE as well.

Personally, I think it's a good thing as it will help avoid some silly line breaks in long debug messages for instance.