[PATCH net-next] net/core: Replace driver version to be kernel version

[Leon Romanovsky <leon@kernel.org>]

From: Leon Romanovsky <leonro@mellanox.com>

In order to stop useless driver version bumps and unify output
presented by ethtool -i, let's overwrite the version string.

Before this change:
[leonro@erver ~]$ ethtool -i eth0
driver: virtio_net
version: 1.0.0
After this change:
[leonro@server ~]$ ethtool -i eth0
driver: virtio_net
version: 5.5.0-rc6+

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
---
I wanted to change to VERMAGIC_STRING, but the output doesn't
look pleasant to my taste and on my system is truncated to be
"version: 5.5.0-rc6+ SMP mod_unload modve".

After this patch, we can drop all those version assignments
from the drivers.

Inspired by nfp and hns code.
---
 net/core/ethtool.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index cd9bc67381b2..3c6fb13a78bf 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -17,6 +17,7 @@
 #include <linux/phy.h>
 #include <linux/bitops.h>
 #include <linux/uaccess.h>
+#include <linux/vermagic.h>
 #include <linux/vmalloc.h>
 #include <linux/sfp.h>
 #include <linux/slab.h>
@@ -776,6 +777,8 @@ static noinline_for_stack int ethtool_get_drvinfo(struct net_device *dev,
 		return -EOPNOTSUPP;
 	}

+	strlcpy(info.version, UTS_RELEASE, sizeof(info.version));
+
 	/*
 	 * this method of obtaining string set info is deprecated;
 	 * Use ETHTOOL_GSSET_INFO instead.
--
2.20.1