Split the bus token defines out into a seperate header file to avoid
inclusion of irqdomain.h in msi.h.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Reviewed-by: NAshok Raj <ashok.raj@intel.com>
Reviewed-by: NJason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20221111122014.237221143@linutronix.de