Logs use either %#x or 0x%x for flags, channel mask, format, device

Preferred is %#x but 0x%x is also permitted because it is widely used.

The benefit is that it reduces ambiguity and possible confusion,
without needing to read the source code for each log.

Test: builds OK and logs are less ambiguous
Change-Id: Ie2404e071d22278b8bba1e094ad336887844212c
diff --git a/services/audioflinger/BufLog.cpp b/services/audioflinger/BufLog.cpp
index 9680eb5..2780290 100644
--- a/services/audioflinger/BufLog.cpp
+++ b/services/audioflinger/BufLog.cpp
@@ -121,7 +121,7 @@
     } else {
         mTag[0] = 0;
     }
-    ALOGV("Creating BufLogStream id:%d tag:%s format:%d ch:%d sr:%d maxbytes:%zu", mId, mTag,
+    ALOGV("Creating BufLogStream id:%d tag:%s format:%#x ch:%d sr:%d maxbytes:%zu", mId, mTag,
             mFormat, mChannels, mSamplingRate, mMaxBytes);
 
     //open file (s), info about tag, format, etc.