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.c b/media/libeffects/testlibs/EffectReverb.c
index 3f9069f..3eb8b2c 100644
--- a/media/libeffects/testlibs/EffectReverb.c
+++ b/media/libeffects/testlibs/EffectReverb.c
@@ -270,8 +270,8 @@
 }
 
 
-static int Reverb_Command(effect_interface_t self, int cmdCode, int cmdSize,
-        void *pCmdData, int *replySize, void *pReplyData) {
+static int Reverb_Command(effect_interface_t self, uint32_t cmdCode, uint32_t cmdSize,
+        void *pCmdData, uint32_t *replySize, void *pReplyData) {
     reverb_module_t *pRvbModule = (reverb_module_t *) self;
     reverb_object_t *pReverb;
     int retsize;