tests/qtest: Add XIVE tests for the powernv10 machine

These XIVE tests include:
- General interrupt IRQ tests that:
- enable and trigger an interrupt
- acknowledge the interrupt
- end of inter

tests/qtest: Add XIVE tests for the powernv10 machine

These XIVE tests include:
- General interrupt IRQ tests that:
- enable and trigger an interrupt
- acknowledge the interrupt
- end of interrupt processing
- Test the Pull Thread Context to Odd Thread Reporting Line
- Test the different cache flush inject and queue sync inject operations

Co-authored-by: Frederic Barrat <fbarrat@linux.ibm.com>
Co-authored-by: Glenn Miles <milesg@linux.ibm.com>
Co-authored-by: Michael Kowal <kowal@linux.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
Signed-off-by: Michael Kowal <kowal@linux.ibm.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>

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