Allow a device to include its own RIL subclass

For cases where a single device needs a subclass, there's no need to
pollute the common core with it: just stick it in the device's own
repository, and add something like
"BOARD_RIL_CLASS := ../../../device/manuf/model/ril/" to the BoardConfig

Change-Id: I9d01ceb6e5587382eb216341e2e373ec0c52848f

Conflicts:
	Android.mk

Android.mk

@@ -24,6 +24,10 @@ LOCAL_SRC_FILES := $(call all-java-files-under, src/java) \
 	$(call all-Iaidl-files-under, src/java) \
 	$(call all-logtags-files-under, src/java)
 
+ifneq ($(BOARD_RIL_CLASS),)
+LOCAL_SRC_FILES += $(call find-other-java-files,$(BOARD_RIL_CLASS))
+endif
+
 LOCAL_JAVA_LIBRARIES := voip-common
 LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE := telephony-common