Use const char correctly in AudioFlinger

Use const char [] instead of const char * to eliminate unnecessary pointer.
Make the array audio_interfaces also const, in addition to the strings.

Change-Id: I31f33d1dcb9a657ee136f4280fd2d46492496831
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index b48f23d..6bf402a 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -63,8 +63,8 @@
 
 namespace android {
 
-static const char* kDeadlockedString = "AudioFlinger may be deadlocked\n";
-static const char* kHardwareLockedString = "Hardware lock is taken\n";
+static const char kDeadlockedString[] = "AudioFlinger may be deadlocked\n";
+static const char kHardwareLockedString[] = "Hardware lock is taken\n";
 
 //static const nsecs_t kStandbyTimeInNsecs = seconds(3);
 static const float MAX_GAIN = 4096.0f;
@@ -147,7 +147,7 @@
     return rc;
 }
 
-static const char *audio_interfaces[] = {
+static const char * const audio_interfaces[] = {
     "primary",
     "a2dp",
     "usb",