Merge branch 'mediatek-fixes'

Merge branch 'mediatek-fixes'

Sean Wang says:

====================
net: ethernet: mediatek: a couple of fixes

a couple of fixes come out from integrating with linux-4.8 rc1
they all are verified and workable on linux-4.8 rc1

Changes since v1:
- usage of loops to work out if all required clock are ready instead
of tedious coding
- remove redundant pinctrl setup that is already done by core driver
thanks for careful and patient reviewing by Andrew Lunn
- splitting distinct changes into the separate patches
- change variable naming from err to ret for readable coding

Changes since v2:
- restore to original clock disabling sequence that is changed
accidentally in the last version
- refine the commit log that would cause misunderstanding what has
been done in the changes
- refine the commit log that would cause footnote losing due to
improper delimiter use

Changes since v3:
- fix git rejects caused by mixing a change from net-next, so
remake the patch set based on the current net branch again.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>