libmemtrack: Use correct format specifier

Remove warnings by using the correct format specifier

Change-Id: I93a1f0a38355d4b501376ed7da2fed41893ac371
diff --git a/libmemtrack/kgsl.c b/libmemtrack/kgsl.c
index 6194043..b644d73 100644
--- a/libmemtrack/kgsl.c
+++ b/libmemtrack/kgsl.c
@@ -87,7 +87,7 @@
          *  gpuaddr useraddr     size    id flags       type            usage sglen
          * 545ba000 545ba000     4096     1 ----pY     gpumem      arraybuffer     1
          */
-        ret = sscanf(line, "%*x %*lx %lu %*d %6s %6s %*s %*d\n",
+        ret = sscanf(line, "%*x %*x %lu %*d %6s %6s %*s %*d\n",
                      &size, flags, line_type);
         if (ret != 3) {
             continue;