[PATCH v2 8/8] target/ppc: replaced the TODO with LOG_UNIMP and add break for silence warnings

[Chen Qun]

When using -Wimplicit-fallthrough in our CFLAGS, the compiler showed warning:
target/ppc/mmu_helper.c: In function ‘dump_mmu’:
target/ppc/mmu_helper.c:1351:12: warning: this statement may fall through 
[-Wimplicit-fallthrough=]
 1351 |         if (ppc64_v3_radix(env_archcpu(env))) {
      |            ^
target/ppc/mmu_helper.c:1358:5: note: here
 1358 |     default:
      |     ^~~~~~~

Use "qemu_log_mask(LOG_UNIMP**)" instead of the TODO comment.
And add the break statement to fix it.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
---
v1->v2: replace the TODO by a LOG_UNIMP call and add break statement(Base on 
Philippe's comments)

Cc: Thomas Huth <thuth@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 target/ppc/mmu_helper.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/target/ppc/mmu_helper.c b/target/ppc/mmu_helper.c
index 8972714775..12723362b7 100644
--- a/target/ppc/mmu_helper.c
+++ b/target/ppc/mmu_helper.c
@@ -1349,11 +1349,12 @@ void dump_mmu(CPUPPCState *env)
         break;
     case POWERPC_MMU_3_00:
         if (ppc64_v3_radix(env_archcpu(env))) {
-            /* TODO - Unsupported */
+            qemu_log_mask(LOG_UNIMP, "%s: the PPC64 MMU unsupported\n",
+                          __func__);
         } else {
             dump_slb(env_archcpu(env));
-            break;
         }
+        break;
 #endif
     default:
         qemu_log_mask(LOG_UNIMP, "%s: unimplemented\n", __func__);
-- 
2.27.0