hdmi_cec: Add HIDL definition and default implementation

Bug: 32073236
Test: make
Change-Id: I6f98bf0c523e31e2863a3c0379d7fda1ef51b0d6
diff --git a/tv/cec/1.0/default/android.hardware.tv.cec@1.0-service.rc b/tv/cec/1.0/default/android.hardware.tv.cec@1.0-service.rc
new file mode 100644
index 0000000..1af32cb
--- /dev/null
+++ b/tv/cec/1.0/default/android.hardware.tv.cec@1.0-service.rc
@@ -0,0 +1,4 @@
+service cec-hal-1-0 /system/bin/hw/android.hardware.tv.cec@1.0-service
+    class hal
+    user system
+    group system