configs: Add Gigabyte GA-F2A88XM-HD3

Input routing and scaling for this board was read from its schematic,
verified on a real specimen.

This config is likely also valid for other members of GA-F2A88XM-x family,
as differences between them seem pretty minor.
It might also be valid for GA-F2A85XM-HD3 board considering that
GA-F2A88XM-HD3 schematic has the former board name as title in many places.

Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>

configs/Gigabyte/GA-F2A88XM-HD3.conf

@@ -0,0 +1,52 @@
+# contributed by Maciej S. Szmigiero <mail@maciej.szmigiero.name>
+#
+# input routing and scaling read from board schematic
+#
+# likely valid also for other boards in GA-F2A88XM-x family
+
+chip "it8620-*"
+	label in0 "CPU Vcore"
+	label in1 "DRAM Voltage"
+
+	label in2 "+12V"
+	compute in2 ((75 / 15) + 1) * @, @ / ((75 / 15) + 1)
+	set in2_min 12 * 0.95
+	set in2_max 12 * 1.05
+
+	label in3 "+5V"
+	compute in3 ((15 / 10) + 1) * @, @ / ((15 / 10) + 1)
+	set in3_min 5 * 0.95
+	set in3_max 5 * 1.05
+
+	label in4 "+3.3V"
+	compute in4 ((649 / 1000) + 1) * @, @ / ((649 / 1000) + 1)
+	set in4_min 3.3 * 0.95
+	set in4_max 3.3 * 1.05
+
+	# likely left unconnected
+	ignore in5
+	ignore in6
+
+	set in7_min 3.3 * 0.95
+	set in7_max 3.3 * 1.05
+
+	label fan1 "CPU Fan"
+	label fan2 "System Fan"
+	ignore fan3
+	ignore fan4
+	ignore fan5
+
+	label temp1 "System Temp"
+
+	# likely left unconnected
+	# no sensor configured for this input in the chip
+	ignore temp2
+
+	# the same (virtual) temperature as reported by k10temp
+	# just offset by 13°C (from temp3_offset) for fan control
+	ignore temp3
+
+	# stuck at 45°C
+	ignore temp4
+	ignore temp5
+	ignore temp6