gogen: Change all is* functions to take a *x86db.Instruction
gogen: Change all is* functions to take a *x86db.Instruction

We never know, we could discover an interface there.

Signed-off-by: Damien Lespiau <64bd3cb94f359c1a3ce68dae5e26b40578526277@intel.com>

dlespiau/x86db,dlespiau/x86db