ANDROID: add getLuts() aidl interface

This is internal for now due to getLuts() AIDL interface not being public yet and will be submitted together with AIDL change.

And the getLuts() interface is to get luts of input buffer handles.

Bug: 352585077
Test: builds
Change-Id: I8af97262cb31e78318d44370f31f5b9890113183
Signed-off-by: Sally Qi <sallyqi@google.com>
diff --git a/hwc3/ComposerClient.cpp b/hwc3/ComposerClient.cpp
index 124f5ea..b33537b 100644
--- a/hwc3/ComposerClient.cpp
+++ b/hwc3/ComposerClient.cpp
@@ -1304,6 +1304,11 @@
   return ToBinderStatus(hwc3::Error::kUnsupported);
 }
 
+ndk::ScopedAStatus ComposerClient::getLuts(int64_t, const std::vector<Buffer>&,
+    std::vector<Luts>*) {
+  return ToBinderStatus(hwc3::Error::kUnsupported);
+}
+
 std::string ComposerClient::Dump() {
   uint32_t size = 0;
   hwc_->Dump(&size, nullptr);