Audio effects: modified command() parameter types.

The type of the cmd, cmdSize and *pReplySize parameters of the effect control interface command()
function have been modified from int to uint32_t. This is more consistent with their role.

Change-Id: I84d289fc262d6753747910f06f485597dfee6591
diff --git a/media/libeffects/testlibs/EffectReverb.h b/media/libeffects/testlibs/EffectReverb.h
index ee8e390..dbcd192 100644
--- a/media/libeffects/testlibs/EffectReverb.h
+++ b/media/libeffects/testlibs/EffectReverb.h
@@ -301,12 +301,23 @@
  *------------------------------------
 */
 int EffectQueryNumberEffects(uint32_t *pNumEffects);
-int EffectQueryEffect(uint32_t index, effect_descriptor_t *pDescriptor);
-int EffectCreate(effect_uuid_t *effectUID, int32_t sessionId, int32_t ioId, effect_interface_t *pInterface);
+int EffectQueryEffect(uint32_t index,
+                      effect_descriptor_t *pDescriptor);
+int EffectCreate(effect_uuid_t *effectUID,
+                 int32_t sessionId,
+                 int32_t ioId,
+                 effect_interface_t *pInterface);
 int EffectRelease(effect_interface_t interface);
 
-static int Reverb_Process(effect_interface_t self, audio_buffer_t *inBuffer, audio_buffer_t *outBuffer);
-static int Reverb_Command(effect_interface_t self, int cmdCode, int cmdSize, void *pCmdData, int *replySize, void *pReplyData);
+static int Reverb_Process(effect_interface_t self,
+                          audio_buffer_t *inBuffer,
+                          audio_buffer_t *outBuffer);
+static int Reverb_Command(effect_interface_t self,
+                          uint32_t cmdCode,
+                          uint32_t cmdSize,
+                          void *pCmdData,
+                          uint32_t *replySize,
+                          void *pReplyData);
 
 
 /*------------------------------------