mb/up/squared: Select NO_UART_ON_SUPERIO

Change-Id: I4c1cadb6d38ffd3f9eddcd1292c2e6aea08791d0
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49395
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/up/squared/Kconfig

@@ -12,6 +12,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select MAINBOARD_HAS_LIBGFXINIT
 	select MAINBOARD_HAS_CRB_TPM
 	select HAVE_INTEL_PTT
+	select NO_UART_ON_SUPERIO
 
 config VBOOT
 	select VBOOT_NO_BOARD_SUPPORT