ARM: dts: msm: add emac, phy, rgmii power supplys in sdxpoorwills

Add gpio based fixed regulators for phy and rgmii io pads.
Add tlmm gpios used for phy reset and phy interrupt redirected.
Add GDSC regulator for emac power supply.
Moving the emac node after the include files due to issue seen
with regulators not getting enabled.
Updated copyright info.

CRs-Fixed: 2124238
Change-Id: Ia912246fa05897c2bbddc7817c29f7daaade2f3c
Acked-by: Nisha Menon <nmenon@qti.qualcomm.com>
Signed-off-by: Skylar Chang <chiaweic@codeaurora.org>