fix various compilation errors after pci code rebase

drivers/virt/qemu_edu.c

@@ -27,6 +27,7 @@
 #include <nuttx/irq.h>
 #include <nuttx/kmalloc.h>
 
+#include <debug.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>

drivers/virt/qemu_pci_test.c

@@ -25,6 +25,7 @@
 #include <nuttx/config.h>
 #include <nuttx/arch.h>
 
+#include <debug.h>
 #include <stdio.h>
 #include <stdint.h>
 #include <string.h>