target/ppc/POWER9: Add POWERPC_MMU_V3 bit

For easier handling of future processors using the POWER9 or something
close to it, add a new bit in the MMU model.  This was originally from a
revised version of 86cf1e9f "target/ppc/POWER9: Add ISAv3.00 MMU definition"
but the older version of the patch was already merged.  This makes the
change on top of the original version.
Signed-off-by: NSuraj Jitindar Singh <sjitindarsingh@gmail.com>
Signed-off-by: NDavid Gibson <david@gibson.dropbear.id.au>

target/ppc/cpu-qom.h

@@ -71,6 +71,7 @@ enum powerpc_mmu_t {
 #define POWERPC_MMU_1TSEG    0x00020000
 #define POWERPC_MMU_AMR      0x00040000
 #define POWERPC_MMU_64K      0x00080000
+#define POWERPC_MMU_V3       0x00100000 /* ISA V3.00 MMU Support */
     /* 64 bits PowerPC MMU                                     */
     POWERPC_MMU_64B        = POWERPC_MMU_64 | 0x00000001,
     /* Architecture 2.03 and later (has LPCR) */
@@ -92,7 +93,8 @@ enum powerpc_mmu_t {
     /* Architecture 3.00 variant                               */
     POWERPC_MMU_3_00       = POWERPC_MMU_64 | POWERPC_MMU_1TSEG
                              | POWERPC_MMU_64K
-                             | POWERPC_MMU_AMR | 0x00000005,
+                             | POWERPC_MMU_AMR | POWERPC_MMU_V3
+                             | 0x00000005,
 };
 
 /*****************************************************************************/