net: phy: broadcom: Add BCM54616S phy entry

Signed-off-by: Alessio Igor Bogani <alessio.bogani@elettra.eu>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --cc drivers/net/phy/Kconfig
Simple merge

diff --cc drivers/net/phy/broadcom.c
Simple merge

diff --cc include/linux/brcmphy.h
Simple merge