[SDK] Swap initguid and wdm headers

The WDM header contains power manager related GUIDs that were declared but never initialized properly due to the fact the initguid.h header wasn't at the top.
This patch fixes a linker error in the kernel where GUIDs like GUID_LIDSWITCH_STATE_CHANGE are used.
It's a hotfix for 624c3fd.

Author: GeoB99

sdk/lib/poguid/poguid.c

@@ -7,8 +7,8 @@
 
 /* INCLUDES *****************************************************************/
 
-#include <wdm.h>
 #include <initguid.h>
+#include <wdm.h>
 #include <poclass.h>
 
 /* EOF */