mb/google/poppy: update ACPI HID/CID for Synaptics touchpad

The currently assigned ACPI HID 'PNP0C50' is not a valid per Windows
WHQL validation tests. To ensure compatibility with both Windows and
Linux, set the HID to 'SYNA0000' and CID to 'ACPI0C50' as previously
done for other boards (eg, google/lulu).

TEST=boot Linux 5.1x, Windows 10 on nami, verify all touchpad
functions work correctly.

Change-Id: I0611da8bbea41565e603a1a1b7cc20226ba21c62
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71075
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/mainboard/google/poppy/variants/nami/devicetree.cb b/src/mainboard/google/poppy/variants/nami/devicetree.cb
index 8583518..12ac721 100644
--- a/src/mainboard/google/poppy/variants/nami/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nami/devicetree.cb
@@ -347,7 +347,8 @@
 				device i2c 15 on end
 			end
 			chip drivers/i2c/hid
-				register "generic.hid" = ""PNP0C50""
+				register "generic.hid" = ""SYNA0000""
+				register "generic.cid" = ""ACPI0C50""
 				register "generic.desc" = ""Synaptics Touchpad""
 				register "generic.irq" = "ACPI_IRQ_LEVEL_LOW(GPP_E3_IRQ)"
 				register "generic.wake" = "GPE0_DW2_16"