UsrbIo.cc: Fix the mismatch between prio and submit-ios*

In the semName function, the correspondence between prio and submit-ios*
is as follows:
0 ¡úmit-ios.ph
1 → submit-ios
others → submit-ios.pl

The cqeSem function should be consistent with the semName function.

Signed-off-by: izxl007 <zeng.zheng@zte.com.cn>

src/lib/api/UsrbIo.cc

@@ -330,8 +330,8 @@ struct Hf3fsIorHandle {
 static int cqeSem(sem_t *&sem, const char *hf3fs_mount_point, int prio) {
   auto link = fmt::format("{}/3fs-virt/iovs/submit-ios{}",
                           std::string(hf3fs_mount_point),
-                          prio == 0  ? ""
-                          : prio < 0 ? ".ph"
+                          prio == 1  ? ""
+                          : prio == 0 ? ".ph"
                                      : ".pl");
   std::vector<char> target(256);