mb/google/fizz/variants/kalista: Add variant for kalista

Add a new variant of fizz for the kalista board.

Key differences from baseboard include:
- GPIO changes
- devicetree.cb changes

BUG=b:117066935
BRANCH=master
TEST=Build (as initial setup)

Change-Id: I808c5e0883049575cbedd181c249a78a833fa96a
Signed-off-by: David Wu <David_Wu@quanta.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/29205
Reviewed-by: David Wu <david_wu@quanta.corp-partner.google.com>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/fizz/variants/kalista/overridetree.cb b/src/mainboard/google/fizz/variants/kalista/overridetree.cb
new file mode 100644
index 0000000..7552c71
--- /dev/null
+++ b/src/mainboard/google/fizz/variants/kalista/overridetree.cb
@@ -0,0 +1,48 @@
+chip soc/intel/skylake
+
+	# Mapping of USB port # to device
+	#+----------------+-------+-----------------------------------+
+	#| Device         | Port# | Rev                               |
+	#+----------------+-------+-----------------------------------+
+	#| Touchsreen     |   10  |                                   |
+	#+----------------+-------+-----------------------------------+
+	register "usb2_ports[9]" = "USB2_PORT_MID(OC_SKIP)"	# Touchscreen
+
+	device domain 0 on
+		device pci 14.0 on
+			chip drivers/usb/acpi
+				device usb 0.0 on
+					chip drivers/usb/acpi
+						register "desc" = ""USB2 Touchscreen""
+						register "type" = "UPC_TYPE_INTERNAL"
+						device usb 2.9 on end
+					end
+				end
+			end
+		end # USB xHCI
+		device pci 19.1 on
+			chip drivers/generic/max98357a
+				register "sdmode_gpio" =  "ACPI_GPIO_OUTPUT_ACTIVE_HIGH(GPP_A23)"
+				register "sdmode_delay" = "5"
+				device generic 0 on end
+			end
+			chip drivers/i2c/da7219
+				register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_D9_IRQ)"
+				register "btn_cfg" = "50"
+				register "mic_det_thr" = "500"
+				register "jack_ins_deb" = "20"
+				register "jack_det_rate" = ""32ms_64ms""
+				register "jack_rem_deb" = "1"
+				register "a_d_btn_thr" = "0xa"
+				register "d_b_btn_thr" = "0x16"
+				register "b_c_btn_thr" = "0x21"
+				register "c_mic_btn_thr" = "0x3e"
+				register "btn_avg" = "4"
+				register "adc_1bit_rpt" = "1"
+				register "micbias_lvl" = "2600"
+				register "mic_amp_in_sel" = ""diff""
+				device i2c 1a on end
+			end
+		end # I2C #5
+	end
+end