audio effects: rename configure command

Renamed audio effect library interface command for audio format
configuration from EFFECT_CMD_CONFIGURE to EFFECT_CMD_SET_CONFIG.
This makes the naming more consistent with other exixsting commands
and allow adding a new command to get the configuration (EFFECT_CMD_GET_CONFIG).
Same change for reverse channel configuration renamed from
EFFECT_CMD_CONFIGURE_REVERSE to EFFECT_CMD_SET_CONFIG_REVERSE.

Implemented EFFECT_CMD_GET_CONFIG in exisitng effect libraries.

Change-Id: Ia7b1c620f13797fe5aceb3b0b4acbacce09fb067
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index fd82306..2a55120 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -6382,7 +6382,7 @@
     status_t cmdStatus;
     uint32_t size = sizeof(int);
     status_t status = (*mEffectInterface)->command(mEffectInterface,
-                                                   EFFECT_CMD_CONFIGURE,
+                                                   EFFECT_CMD_SET_CONFIG,
                                                    sizeof(effect_config_t),
                                                    &mConfig,
                                                    &size,