PCI: pcie-brcmstb: fake MSIx support on internal MSI target

Apparently some NVMe SSD implementations don't fall back to MSI cleanly,
instead making the driver allocate one queue via the legacy interrupt.

There are still only 32 vectors available, but should be sufficient for
the majority of use-cases on BCM2711.

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>

Author: P33M

drivers/pci/controller/pcie-brcmstb.c

@@ -663,7 +663,7 @@ static struct irq_chip brcm_msi_irq_chip = {
 
 static struct msi_domain_info brcm_msi_domain_info = {
 	.flags	= MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
-		  MSI_FLAG_NO_AFFINITY | MSI_FLAG_MULTI_PCI_MSI,
+		  MSI_FLAG_NO_AFFINITY | MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX,
 	.chip	= &brcm_msi_irq_chip,
 };