mb/google/poppy/var/nocturne: Hide FPR device in ACPI

Set FPR (Fingerprint Reader) device status to hidden to prevent
Windows from enumerating it, as Windows does not support the FPR
on this platform. Linux ignores ACPI device status and continues
to work correctly via direct SPI access.

TEST=build/boot Win11, Linux on Nocturne.

Change-Id: I8806cbef3acbab45ddd03e9fa80f79625c84bcb4
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90156
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/google/poppy/variants/nocturne/devicetree.cb

@@ -359,7 +359,7 @@ chip soc/intel/skylake
 				register "compat_string" = ""google,cros-ec-spi""
 				register "irq" = "ACPI_IRQ_LEVEL_LOW(GPP_C11_IRQ)"
 				register "wake" = "GPE0_DW0_09" # GPP_C9
-				device spi 0 on end
+				device spi 0 hidden end
 			end # FPMCU
 		end
 		device ref emmc 		on  end