[RFC] kprobes/kprobes-test fixes, .inst updates

[Ben Dooks]

This is a series to fix kprobes and kprobes-test, as well as tidy
up the <asm/opcodes.h> use of data instructions to output code and
a missed bug in traps.

I have not had time to test these, or push to the new git server we
are using. I will try and sort this out on monday.

This is an initial review series and I would appreicate testing.