mpipl: move from diagnostic target to crash target

The MPIPL function was moved from the diagnostic target to the crash
target. The diagnostic target is now a part of the crash target so it
will still be called as a part of this process.

The following commit has more info on why this change was made:
https://gerrit.openbmc-project.xyz/c/openbmc/openbmc/+/39711

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ie1598a06f5d14edd6edde1e95d63becbd1fdba96
diff --git a/dump-extensions/openpower-dumps/dump_manager_system.cpp b/dump-extensions/openpower-dumps/dump_manager_system.cpp
index 8c536d0..d7b73a9 100644
--- a/dump-extensions/openpower-dumps/dump_manager_system.cpp
+++ b/dump-extensions/openpower-dumps/dump_manager_system.cpp
@@ -74,7 +74,7 @@
     constexpr auto SYSTEMD_SERVICE = "org.freedesktop.systemd1";
     constexpr auto SYSTEMD_OBJ_PATH = "/org/freedesktop/systemd1";
     constexpr auto SYSTEMD_INTERFACE = "org.freedesktop.systemd1.Manager";
-    constexpr auto DIAG_MOD_TARGET = "obmc-host-diagnostic-mode@0.target";
+    constexpr auto DIAG_MOD_TARGET = "obmc-host-crash@0.target";
 
     if (!params.empty())
     {