These patches are needed for b53 implementation of b53_support_eee, which
prevent system hangs on bmips devices.
99379f587278c net: dsa: provide implementation of .support_eee()
9723a77318b7c net: dsa: add hook to determine whether EEE is supported
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>