Fix security vulnerability: potential OOB write in audioserver am: 3f9a6d3bd9 am: 28d8817df3 am: 750a6a4ed8 am: 559dbde531 am: 4654f9ab8b am: 4154f08e79
am: 2ebeab8c6b

Change-Id: I8ee48760ca62d1e9002a53694be8f39ff47a7b33
diff --git a/include/hardware/audio_effect.h b/include/hardware/audio_effect.h
index 41cd2e6..854f0c1 100644
--- a/include/hardware/audio_effect.h
+++ b/include/hardware/audio_effect.h
@@ -896,6 +896,9 @@
     char        data[];     // Start of Parameter + Value data
 } effect_param_t;
 
+// Maximum effect_param_t size
+#define EFFECT_PARAM_SIZE_MAX       65536
+
 // structure used by EFFECT_CMD_OFFLOAD command
 typedef struct effect_offload_param_s {
     bool isOffload;         // true if the playback thread the effect is attached to is offloaded