hal: fix compilation for missing %d on LOG msg

Fix compilation error due to missing %d for
LOG msg in voice driver.

Change-Id: Iec0622cba3f2331446c7e13285b5d4b69e030260
diff --git a/hal/voice.c b/hal/voice.c
index b136f77..ce0c3ed 100644
--- a/hal/voice.c
+++ b/hal/voice.c
@@ -323,7 +323,7 @@
                                  pcm_dev_loopback_tx_id,
                                  PCM_IN, &voice_config);
     if (voice_loopback_tx < 0 || !pcm_is_ready(voice_loopback_tx)) {
-         ALOGE("%s: Either could not open pcm_dev_loopback_tx_id or %s",
+         ALOGE("%s: Either could not open pcm_dev_loopback_tx_id %d or %s",
                __func__, pcm_dev_loopback_tx_id, pcm_get_error(voice_loopback_tx));
          ret = -EIO;
          goto error_start_voice;