Add device/fwk compatibility matrices to device.

Also renamed matrix.xml to compatibility_matrix.xml.

Test: make and ensure vendor/compatibility_matrix.xml is there.
Test: adb shell vintf (see matrices, compatible = true)

Bug: 37321309
Change-Id: I4ebbedf47a576a50a42df53b72e507ed31ef2e56
diff --git a/core/config.mk b/core/config.mk
index 6d5feb3..559b987 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -687,6 +687,7 @@
 endif
 
 FRAMEWORK_MANIFEST_FILE := system/libhidl/manifest.xml
+FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.xml
 
 # ###############################################################
 # Set up final options.