trampoline-arm: add trampoline for patching a Thumb function
trampoline-arm: add trampoline for patching a Thumb function

Thumb is an ARM instruction set encoding, it uses 16-bit instructions
instead of 32.

When patching such a function, we should use a Thumb-encoded trampoline.

Snaipe/BoxFort,Snaipe/BoxFort,Snaipe/BoxFort,Snaipe/BoxFort