lttng libs: add Makefile

obj-m += lib-ring-buffer.o

lib-ring-buffer-objs := \

	ringbuffer/ring_buffer_backend.o \

	ringbuffer/ring_buffer_frontend.o \

	ringbuffer/ring_buffer_iterator.o \

	ringbuffer/ring_buffer_vfs.o \

	ringbuffer/ring_buffer_splice.o \

	ringbuffer/ring_buffer_mmap.o \

	prio_heap/lttng_prio_heap.o \

	../wrapper/splice.o