net: phy: bcm-phy-lib: Fix module license issue

The 'bcm-phy-lib.c', added as a part of the commit
"net: phy: Add Broadcom phy library for common interfaces"
was missing the module license. This was causing an issue
when the library is built as a module; "module license
'unspecified' taints kernel".

This patch fixes the issue by adding the module license,
author and description to the bcm-phy-lib.c file.

Fixes: a1cba5613e ("net: phy: Add Broadcom phy library for
common interfaces")
Signed-off-by: Arun Parameswaran <arunp@broadcom.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/phy/bcm-phy-lib.c

@@ -15,6 +15,7 @@
 #include <linux/brcmphy.h>
 #include <linux/export.h>
 #include <linux/mdio.h>
+#include <linux/module.h>
 #include <linux/phy.h>
 
 #define MII_BCM_CHANNEL_WIDTH     0x2000
@@ -206,3 +207,7 @@ int bcm_phy_enable_eee(struct phy_device *phydev)
 	return 0;
 }
 EXPORT_SYMBOL_GPL(bcm_phy_enable_eee);
+
+MODULE_DESCRIPTION("Broadcom PHY Library");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Broadcom Corporation");