Prefer printf format "%#x" over "0x%x".

I exist to serve.

Change-Id: I8e2880b20eefd466da8515d5b6b0c5cb75d56169
diff --git a/tools/dmtracedump/CreateTestTrace.c b/tools/dmtracedump/CreateTestTrace.c
index 0b85d51..a4ae02e 100644
--- a/tools/dmtracedump/CreateTestTrace.c
+++ b/tools/dmtracedump/CreateTestTrace.c
@@ -399,14 +399,14 @@
                 pNext->methodId = id;
         }
         if (pRecord->className == NULL || pRecord->methodName == NULL) {
-            fprintf(keyFp, "0x%x        %s      m       ()\n",
+            fprintf(keyFp, "%#x        %s      m       ()\n",
                     pRecord->methodId, pRecord->fullName);
         } else if (pRecord->signature == NULL) {
-            fprintf(keyFp, "0x%x        %s      %s      ()\n",
+            fprintf(keyFp, "%#x        %s      %s      ()\n",
                     pRecord->methodId, pRecord->className,
                     pRecord->methodName);
         } else {
-            fprintf(keyFp, "0x%x        %s      %s      %s\n",
+            fprintf(keyFp, "%#x        %s      %s      %s\n",
                     pRecord->methodId, pRecord->className,
                     pRecord->methodName, pRecord->signature);
         }
diff --git a/tools/dmtracedump/TraceDump.c b/tools/dmtracedump/TraceDump.c
index 4127530..b60bbf5 100644
--- a/tools/dmtracedump/TraceDump.c
+++ b/tools/dmtracedump/TraceDump.c
@@ -1220,7 +1220,7 @@
         method = lookupMethod(pKeys, methodId);
         if (method == NULL) {
             method = &bogusMethod;
-            sprintf(bogusBuf, "methodId: 0x%x", methodId);
+            sprintf(bogusBuf, "methodId: %#x", methodId);
             method->signature = bogusBuf;
         }