mainboard: Add MSI MS-7707

* MSI MS-7707 V1.1 (Medion OEM Akoya P4385D MSN10014555)
* SandyBridge Intel P67 (BD82x6x)
* Winbond 25Q32BV (4MB)
* Fintek F71808A
* Intel 82579V Gigabit
* NEC uPD720200 USB 3.0 Host Controller
* IME 7.0.4.1197

Working:
* Tested on Arch Linux 5.0.5
* PCIe gfx adapter
* PS/2 Keyboard
* USB3.0
* Ethernet
* coreboot 4.9 (TianoCore stable)
* S0/S5 states
* H/W FAN control (proper HWM function not checked)

Known issues:
* S0/S5 states work properly as long as the board gets powered.
  After power cut the system is dead. Needs battery removal and
  CMOSCLR to revive. SuperIO is supposed to be in an unknown
  state as current coreboot SuperIO initialization isn't able
  to set all registers.
  (see cbmem.log - skipping PNP: 004e.a@e0 fixed resource, size=0!)

* Logs in ${doc} folder

Change-Id: I999149bb95d553ed217b2288cc34bce4fe88abb3
Signed-off-by: Bluemax <1403092+BlueMax@users.noreply.github.com>
---
A src/mainboard/medion/Kconfig
A src/mainboard/medion/Kconfig.name
A src/mainboard/medion/ms_7707/Kconfig
A src/mainboard/medion/ms_7707/Kconfig.name
A src/mainboard/medion/ms_7707/Makefile.inc
A src/mainboard/medion/ms_7707/acpi/ec.asl
A src/mainboard/medion/ms_7707/acpi/platform.asl
A src/mainboard/medion/ms_7707/acpi/superio.asl
A src/mainboard/medion/ms_7707/acpi_tables.c
A src/mainboard/medion/ms_7707/board_info.txt
A src/mainboard/medion/ms_7707/devicetree.cb
A src/mainboard/medion/ms_7707/dsdt.asl
A src/mainboard/medion/ms_7707/gpio.c
A src/mainboard/medion/ms_7707/hda_verb.c
A src/mainboard/medion/ms_7707/romstage.c
15 files changed, 653 insertions(+), 0 deletions(-)