opal-api: Reserve 2 OPAL API calls for future OpenCAPI LPC use

OpenCAPI Lowest Point of Coherency (LPC) memory is going to require
some extra OPAL calls to set up NPU BARs. These calls will most likely be
called OPAL_NPU_LPC_ALLOC and OPAL_NPU_LPC_RELEASE, we're not quite ready
to upstream that code yet though.

Reserve 171 and 172 for this purpose.

Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Stewart Smith <stewart@linux.ibm.com>

include/opal-api.h

@@ -1,4 +1,4 @@
-/* Copyright 2013-2018 IBM Corp.
+/* Copyright 2013-2019 IBM Corp.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -227,7 +227,9 @@
 #define OPAL_NPU_SET_RELAXED_ORDER		168
 #define OPAL_NPU_GET_RELAXED_ORDER		169
 #define OPAL_XIVE_GET_VP_STATE			170 /* Get NVT state */
-#define OPAL_LAST				170
+#define OPAL_NPU_RESERVED1			171  /* LPC Allocate */
+#define OPAL_NPU_RESERVED2			172  /* LPC Release */
+#define OPAL_LAST				172
 
 #define QUIESCE_HOLD			1 /* Spin all calls at entry */
 #define QUIESCE_REJECT			2 /* Fail all calls with OPAL_BUSY */