net: niu uses crc32, so select CRC32

From: Randy Dunlap <randy.dunlap@oracle.com>

niu drivers uses crc32 functions, so it needs to select CRC32.

niu.c:(.text+0x18a7f8): undefined reference to `crc32_le'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 0bbd5ae..a5be9ac 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -2696,6 +2696,7 @@
 config NIU
 	tristate "Sun Neptune 10Gbit Ethernet support"
 	depends on PCI
+	select CRC32
 	help
 	  This enables support for cards based upon Sun's
 	  Neptune chipset.