Use String8/16 c_str [audio]

Bug: 295394788
Test: make checkbuild
Change-Id: Idd3610f6820093bd8710a401f87a136cc26279c5
Merged-In: Idd3610f6820093bd8710a401f87a136cc26279c5
diff --git a/services/audioflinger/PatchPanel.cpp b/services/audioflinger/PatchPanel.cpp
index b54b41f..972c870 100644
--- a/services/audioflinger/PatchPanel.cpp
+++ b/services/audioflinger/PatchPanel.cpp
@@ -906,7 +906,7 @@
             patchPanelDump += "\nPatches:\n";
             headerPrinted = true;
         }
-        patchPanelDump.appendFormat("%s%s\n", indent, iter.second.dump(iter.first).string());
+        patchPanelDump.appendFormat("%s%s\n", indent, iter.second.dump(iter.first).c_str());
     }
 
     headerPrinted = false;
@@ -924,12 +924,12 @@
             for (const auto& patch : module.second.sw_patches) {
                 moduleDump.appendFormat("%d ", patch);
             }
-            patchPanelDump.appendFormat("%s%s\n", indent, moduleDump.string());
+            patchPanelDump.appendFormat("%s%s\n", indent, moduleDump.c_str());
         }
     }
 
     if (!patchPanelDump.isEmpty()) {
-        write(fd, patchPanelDump.string(), patchPanelDump.size());
+        write(fd, patchPanelDump.c_str(), patchPanelDump.size());
     }
 }