mainboard/amd: Add padmelon board code

With only merlin falcon binaries missing, it's time to add padmelon board.
There are 2 versions, one using 00670F00 and one using merlinfalcon. This
code was intended for merlinfalcon version, but as there are some legal
issues (documentation) blocking its merge to coreboot, it'll be released
for 00670F00, being replaced later with merlinfalcon when the binaries can
be merged to coreboot (PSP, video and AGESA). Within padmelon board, the
actual fan control is done through a SIO, fintek f81803a.

BUG=none.
TEST=Both versions tested and boot to Linux using SeaBIOS.

Change-Id: I5a366ddeb4cfebd177a8744f6edb87aecd4787dd
Signed-off-by: Richard Spiegel <richard.spiegel@silverbackltd.com>
---
A src/mainboard/amd/padmelon/BiosCallOuts.c
A src/mainboard/amd/padmelon/BiosCallOuts.h
A src/mainboard/amd/padmelon/Kconfig
A src/mainboard/amd/padmelon/Kconfig.name
A src/mainboard/amd/padmelon/Makefile.inc
A src/mainboard/amd/padmelon/OemCustomize.c
A src/mainboard/amd/padmelon/acpi/gpe.asl
A src/mainboard/amd/padmelon/acpi/mainboard.asl
A src/mainboard/amd/padmelon/acpi/routing.asl
A src/mainboard/amd/padmelon/acpi/sleep.asl
A src/mainboard/amd/padmelon/acpi/superio.asl
A src/mainboard/amd/padmelon/acpi/usb_oc.asl
A src/mainboard/amd/padmelon/acpi_tables.c
A src/mainboard/amd/padmelon/board_info.txt
A src/mainboard/amd/padmelon/bootblock/OemCustomize.c
A src/mainboard/amd/padmelon/bootblock/bootblock.c
A src/mainboard/amd/padmelon/devicetree.cb
A src/mainboard/amd/padmelon/dsdt.asl
A src/mainboard/amd/padmelon/fan_init.c
A src/mainboard/amd/padmelon/gpio.c
A src/mainboard/amd/padmelon/gpio.h
A src/mainboard/amd/padmelon/irq_tables.c
A src/mainboard/amd/padmelon/mainboard.c
A src/mainboard/amd/padmelon/mptable.c
A src/mainboard/amd/padmelon/romstage.c
25 files changed, 1,932 insertions(+), 0 deletions(-)