purism/librem13v2: Add initial directory for librem13 v2

Add the initial directory for the port of the Librem 13 v2.
The base implementation was copied from the google/chell directory
and the chell references were replaced. spd directory was removed
since the RAM is not soldered on the MB. The Kconfig, board_info.txt
and devicetree.cb files were modified to match the Librem 13 v2
hardware information. The romstage.c, mainboard.c, Makefile.in and
dsdt.asl were modified to remove chromeos specific code. The boardid.c,
chromeos.c, chromeos.fmd, cmos.layout, ec.c, ec.h and smihandler.c
files were removed from the tree, and the acpi directory was replaced
with the acpi directory from the purism/librem13 board.

These changes allow us to remove the references to chromeos specific
code and allow coreboot to compile when the librem13v2 board is selected.

Change-Id: I24263fde18fcea70163dbdc59df6ea1d98c97af8
Signed-off-by: Youness Alaoui <youness.alaoui@puri.sm>
Reviewed-on: https://review.coreboot.org/19932
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/purism/librem13v2/Kconfig b/src/mainboard/purism/librem13v2/Kconfig
new file mode 100644
index 0000000..91ece0a
--- /dev/null
+++ b/src/mainboard/purism/librem13v2/Kconfig
@@ -0,0 +1,47 @@
+if BOARD_PURISM_LIBREM13_V2
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select SYSTEM_TYPE_LAPTOP
+	select BOARD_ROMSIZE_KB_16384
+	select DRIVERS_I2C_GENERIC
+	select DRIVERS_I2C_NAU8825
+	select HAVE_ACPI_RESUME
+	select HAVE_ACPI_TABLES
+	select SOC_INTEL_SKYLAKE
+
+config IRQ_SLOT_COUNT
+	int
+	default 18
+
+config MAINBOARD_VENDOR
+	string
+	default "Purism"
+
+config MAINBOARD_FAMILY
+	string
+	default "Librem 13"
+
+config MAINBOARD_PART_NUMBER
+	string
+	default "Librem 13 v2"
+
+config MAINBOARD_DIR
+	string
+	default "purism/librem13v2"
+
+config MAX_CPUS
+	int
+	default 8
+
+config NO_POST
+	def_bool y
+	help
+	  This platform does not have any way to see POST codes
+	  so disable them by default.
+
+config VGA_BIOS_ID
+	string
+	default "8086,1916"
+
+endif