net: fill in MODULE_DESCRIPTION()s for dwmac-socfpga

W=1 builds now warn if module is built without a MODULE_DESCRIPTION().
Add descriptions to the STMicro DWMAC for Altera SOCs.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c

@@ -585,4 +585,5 @@ static struct platform_driver socfpga_dwmac_driver = {
 };
 module_platform_driver(socfpga_dwmac_driver);
 
+MODULE_DESCRIPTION("Altera SOC DWMAC Specific Glue layer");
 MODULE_LICENSE("GPL v2");