greybus: Makefile: fix up build test for gb-audio-codec.ko

We really only want to build the module if the config is set, not all
the time like the current code does.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Greg Kroah-Hartman 2016-01-13 16:18:36 -08:00
commit 86a685dd45