tests/qtest/migration: Re-enable postcopy tests

Postcopy tests have been inadvertently disabled since commit
124a3c5 ("tests/qtest/migration: Move ufd_version_check to
utils"). That commit moved the ufd_version_check() function to another
file but failed to make sense of the ifdefs and includes:

The <sys/syscall> include was incorrectly dropped. It is needed to
pull in <asm/unistd.h> for __NR_userfaultfd.

The <sys/ioctl.h> was moved under the wrong ifdef.

Fixes: 124a3c5 ("tests/qtest/migration: Move ufd_version_check to utils")
Reviewed-by: Peter Xu <[email protected]>
Signed-off-by: Fabiano Rosas <[email protected]>
Message-Id: <[email protected]>

Author: Fabiano Rosas

tests/qtest/migration/migration-util.c

@@ -22,6 +22,11 @@
 #include "migration/bootfile.h"
 #include "migration/migration-util.h"
 
+#if defined(__linux__)
+#include <sys/ioctl.h>
+#include <sys/syscall.h>
+#endif
+
 /* for uffd_version_check() */
 #if defined(__linux__) && defined(__NR_userfaultfd) && defined(CONFIG_EVENTFD)
 #include <sys/eventfd.h>
@@ -31,7 +36,6 @@
 /* For dirty ring test; so far only x86_64 is supported */
 #if defined(__linux__) && defined(HOST_X86_64)
 #include "linux/kvm.h"
-#include <sys/ioctl.h>
 #endif