spdk: update spdk submodule to accept new interface changes

Signed-off-by: Haomai Wang <haomai@xsky.com>

diff --git a/src/spdk b/src/spdk
index 6a1463deeeea542a9a93bf78c9ee121ff649d4f3..9322c258084c6abdeefe00067f8b310a6e0d9a5a 160000 (submodule)
--- a/src/spdk
+++ b/src/spdk
@@ -1 +1 @@
-Subproject commit 6a1463deeeea542a9a93bf78c9ee121ff649d4f3
+Subproject commit 9322c258084c6abdeefe00067f8b310a6e0d9a5a