native frameworks: 64-bit compile issues

- Fix format (print/scanf)
- Suppress unused argument warning messages (bonus)

Change-Id: I05c7724d2aba6da1e82a86000e11f3a8fef4e728
diff --git a/libs/ui/FramebufferNativeWindow.cpp b/libs/ui/FramebufferNativeWindow.cpp
index 31a69b2..918f2e7 100644
--- a/libs/ui/FramebufferNativeWindow.cpp
+++ b/libs/ui/FramebufferNativeWindow.cpp
@@ -259,8 +259,8 @@
     return 0;
 }
 
-int FramebufferNativeWindow::lockBuffer_DEPRECATED(ANativeWindow* window, 
-        ANativeWindowBuffer* buffer)
+int FramebufferNativeWindow::lockBuffer_DEPRECATED(ANativeWindow* /*window*/, 
+        ANativeWindowBuffer* /*buffer*/)
 {
     return NO_ERROR;
 }
@@ -326,7 +326,7 @@
     return BAD_VALUE;
 }
 
-int FramebufferNativeWindow::perform(ANativeWindow* window,
+int FramebufferNativeWindow::perform(ANativeWindow* /*window*/,
         int operation, ...)
 {
     switch (operation) {