hw/rdma: Compile target-independent parts of the rdma code only once

Some files of the rdma code do not depend on any target specific
macros. Compile these only once to save some time during the build.

Message-Id: <20230419114937.667221-1-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed