IB/cxgb3: Move user vendor structures

This patch moves cxgb3 vendor's specific structures to
common UAPI folder which will be visible to all consumers.

These structures are used by user-space library driver
(libcxgb3) and currently manually copied to that library.

This move will allow cross-compile against these files and
simplify introduction of vendor specific data.

Signed-off-by: Leon Romanovsky <leon@kernel.org>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/include/uapi/rdma/Kbuild b/include/uapi/rdma/Kbuild
index e9b0ca2..681d718 100644
--- a/include/uapi/rdma/Kbuild
+++ b/include/uapi/rdma/Kbuild
@@ -7,4 +7,5 @@
 header-y += rdma_user_cm.h
 header-y += hfi/
 header-y += rdma_user_rxe.h
+header-y += cxgb3-abi.h
 header-y += mlx5-abi.h