mb/google/rex: Select IOM_ACPI_DEVICE_VISIBLE

Needed for coolstar's IOM/TCSS drivers under Windows.

TEST=build/boot Win11 on google/screebo

Change-Id: Ib5a288d9b5d259c27f3b3b2b1b7b86e9c0e1f491
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86822
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin L Roth <gaumless@gmail.com>

src/mainboard/google/rex/Kconfig

@@ -22,6 +22,7 @@ config BOARD_GOOGLE_REX_COMMON
 	select GOOGLE_SMBIOS_MAINBOARD_VERSION
 	select HAVE_ACPI_TABLES
 	select I2C_TPM
+	select IOM_ACPI_DEVICE_VISIBLE
 	select INTEL_LPSS_UART_FOR_CONSOLE
 	select MAINBOARD_DISABLE_STAGE_CACHE
 	select MAINBOARD_HAS_TPM2