drm_hwcomposer: Fix build warnings

A cleanup patch to fix the build warnings that have surfaced
from the new build system.

BUG=None
TEST=Builds without warnings

Change-Id: I2ad898e627d451f87705d2bdf06a315b8e1c7a1c
Signed-off-by: Sean Paul <seanpaul@chromium.org>
diff --git a/nvimporter.cpp b/nvimporter.cpp
index d5c3abc..febcb4f 100644
--- a/nvimporter.cpp
+++ b/nvimporter.cpp
@@ -20,6 +20,7 @@
 #include "importer.h"
 #include "nvimporter.h"
 
+#include <cinttypes>
 #include <stdatomic.h>
 #include <xf86drm.h>
 #include <xf86drmMode.h>
@@ -124,7 +125,7 @@
 int NvImporter::ReleaseBuffer(hwc_drm_bo_t *bo) {
   NvBuffer_t *buf = (NvBuffer_t *)bo->priv;
   if (!buf) {
-    ALOGE("Freeing bo %ld, buf is NULL!", bo->fb_id);
+    ALOGE("Freeing bo %" PRIu32 ", buf is NULL!", bo->fb_id);
     return 0;
   }
   if (atomic_fetch_sub(&buf->ref, 1) > 1)