Use String8/16 c_str [camera]

Bug: 295394788
Test: make checkbuild
Change-Id: I321053f5a82ca2e1ad9ea447f96e81a87c3fcfe0
diff --git a/services/camera/libcameraservice/api1/Camera2Client.cpp b/services/camera/libcameraservice/api1/Camera2Client.cpp
index 68c28e9..9dead7f 100644
--- a/services/camera/libcameraservice/api1/Camera2Client.cpp
+++ b/services/camera/libcameraservice/api1/Camera2Client.cpp
@@ -162,7 +162,7 @@
         SharedParameters::Lock l(mParameters);
         ALOGD("%s: Default parameters converted from camera %d:", __FUNCTION__,
               mCameraId);
-        ALOGD("%s", l.mParameters.paramsFlattened.string());
+        ALOGD("%s", l.mParameters.paramsFlattened.c_str());
     }
 
     return OK;
@@ -221,7 +221,7 @@
         result << fmt::sprintf("    GPS timestamp: %" PRId64 "\n",
                 p.gpsTimestamp);
         result << fmt::sprintf("    GPS processing method: %s\n",
-                p.gpsProcessingMethod.string());
+                p.gpsProcessingMethod.c_str());
     }
 
     result << "    White balance mode: ";