hw/cxl: Fix msix_notify: Assertion vector < dev->msix_entries_nr

This assertion always happens when we sanitize the CXL memory device.
$ echo 1 > /sys/bus/cxl/devices/mem0/security/sanitize

It is incorrect to register an MSIX number beyond the device's capability.

Increase the device's MSIX number to cover the mailbox msix number(9).

Fixes: 43efb0b ("hw/cxl/mbox: Wire up interrupts for background completion")
Signed-off-by: Li Zhijian <[email protected]>
Message-Id: <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>

Author: zhijianli88

hw/mem/cxl_type3.c

@@ -843,7 +843,7 @@ static void ct3_realize(PCIDevice *pci_dev, Error **errp)
     ComponentRegisters *regs = &cxl_cstate->crb;
     MemoryRegion *mr = &regs->component_registers;
     uint8_t *pci_conf = pci_dev->config;
-    unsigned short msix_num = 6;
+    unsigned short msix_num = 10;
     int i, rc;
     uint16_t count;