ipmid: Update sdbuspp namespaces

Fixed all errors when we remove
`SDBUSPP_REMOVE_DEPRECATED_NAMESPACE` in sdbusplus.

Change-Id: I5607585b2709faa7aee347d26e458ef769ca1626
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/softoff/mainapp.cpp b/softoff/mainapp.cpp
index 7ff90b0..6f1f2d3 100644
--- a/softoff/mainapp.cpp
+++ b/softoff/mainapp.cpp
@@ -72,8 +72,8 @@
          phosphor::ipmi::Base::SoftPowerOff::HostResponse::SoftOffReceived))
     {
         using error =
-            sdbusplus::xyz::openbmc_project::State::Host::Error::SoftOffTimeout;
-        using errorMetadata = xyz::openbmc_project::State::Host::SoftOffTimeout;
+            sdbusplus::error::xyz::openbmc_project::state::host::SoftOffTimeout;
+        using errorMetadata = xyz::openbmc_project::state::host::SoftOffTimeout;
         report<error>(prev_entry<errorMetadata::TIMEOUT_IN_MSEC>());
         return -1;
     }