Require CONFIG_HID_PLAYSTATION for DualSense key layout

Some olders kernels don't yet support HID_PLAYSTATION. While they are
working on supporting this driver, provide this temporary solution.

Before this patch, if the key layout is loaded, but there is no
HID_PLAYSTATION, then the mappings on the device will be incorrect.

With this patch, this key layout will not be loaded unless there is a
CONFIG_HID_PLAYSTATION enabled on the device.

Instead, when the main layout cannot be loaded, we make another attempt
to load a fallback layout. This way, the mappings on DualSense can be
correct even if the HID_PLAYSTATION module is not loaded.

In this CL, the fallback layout was tested using controllerTester.

Bug: 228005926
Test: tested mappings with a DualSense controller on a device that does
not have CONFIG_HID_PLAYSTATION

Change-Id: I7e46ae1943cd2c63b8c0b03fdf5d71adeea89f6f
diff --git a/tools/validatekeymaps/Android.bp b/tools/validatekeymaps/Android.bp
index ff24d16..25373f9 100644
--- a/tools/validatekeymaps/Android.bp
+++ b/tools/validatekeymaps/Android.bp
@@ -21,6 +21,7 @@
     cflags: [
         "-Wall",
         "-Werror",
+        "-Wextra",
     ],
 
     static_libs: [
@@ -31,6 +32,9 @@
         "liblog",
         "libui-types",
     ],
+    shared_libs: [
+        "libvintf",
+    ],
     target: {
         host_linux: {
             static_libs: [