audio: Add support for dumping info from effect HAL modules

The implementation uses IBase::debug() method which can write
debugging info into the provided file descriptor (same model
as used for devices and streams).

Bug: 69939533
Test: adb shell dumpsys media.audio_flinger
Change-Id: I7876fd43a7066c0f081ea2ca0b3b4b37bbdf8e6c
diff --git a/audio/effect/all-versions/default/DownmixEffect.cpp b/audio/effect/all-versions/default/DownmixEffect.cpp
index 94da70e..c001a5f 100644
--- a/audio/effect/all-versions/default/DownmixEffect.cpp
+++ b/audio/effect/all-versions/default/DownmixEffect.cpp
@@ -161,6 +161,10 @@
     return mEffect->close();
 }
 
+Return<void> DownmixEffect::debug(const hidl_handle& fd, const hidl_vec<hidl_string>& options) {
+    return mEffect->debug(fd, options);
+}
+
 // Methods from ::android::hardware::audio::effect::CPP_VERSION::IDownmixEffect follow.
 Return<Result> DownmixEffect::setType(IDownmixEffect::Type preset) {
     return mEffect->setParam(DOWNMIX_PARAM_TYPE, static_cast<downmix_type_t>(preset));