ipq806x: apply updated USB PHY settings to v2.0 SoC

ipq806x: apply updated USB PHY settings to v2.0 SoC

USB PHY power settings introduced for ipq8065 SoC with commit
644a0d5 "ipq8065: adjust SS USB PHY power settings"

According to that commit msg and in correspondence to GPL tarballs
and related QSDK branch those settings are applied to ipq8064
SoCs of version >= 2.0.

https://github.com/paul-chambers/netgear-r7800/blob/master/git_home/linux.git/sourcecode/arch/arm/mach-msm/board-ipq806x.c#L2507-L2514

Now as we have clarified that mass market boards are of SoC v2.0
move those USB PHY settings from ipq8065 (v3.0 SoC) dtsi to
ipq8064 v2.0 dtsi.

Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
[slh: rebase for kernel v4.14 as well]
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>