[PULL 06/12] target/hppa: Implement do_transaction_failed handler for I/O errors

From: Helge Deller Add the do_transaction_failed() handler to tigger a HPMC to the CPU in case of I/O transaction errors. This is a preparation commit. We still lack implementation for some registers, so do not yet enable sending HPMCs. Having this hunk here now nevertheless helps for the furth

[PULL 06/12] target/hppa: Implement do_transaction_failed handler for I/O errors

From: Helge Deller Add the do_transaction_failed() handler to tigger a HPMC to the CPU in case of I/O transaction errors. This is a preparation commit. We still lack implementation for some registers, so do not yet enable sending HPMCs. Having this hunk here now nevertheless helps for the furth