`-objs` is designed for building host programs, change to `-y`,
more straightforward for device drivers.

See Documentation/kbuild/makefiles.rst
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20200616162140.2563535-1-vkoul@kernel.orgSigned-off-by: Vinod Koul <vkoul@kernel.org>