soc/intel/common/block/acpi: Skip UART debug table if not used

Skip the ACPI UART debug table if common block UART isn't selected.

Change-Id: I8d627998ca450c32496c90e51aad48f332b40e23
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48247
Reviewed-by: Jay Talbott <JayTalbott@sysproconsulting.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/common/block/acpi/acpi.c b/src/soc/intel/common/block/acpi/acpi.c
index 2948faf..d2177294 100644
--- a/src/soc/intel/common/block/acpi/acpi.c
+++ b/src/soc/intel/common/block/acpi/acpi.c
@@ -158,9 +158,12 @@
 					    unsigned long current,
 					    struct acpi_rsdp *rsdp)
 {
-	current = acpi_write_dbg2_pci_uart(rsdp, current,
-					   uart_get_device(),
-					   ACPI_ACCESS_SIZE_DWORD_ACCESS);
+	if (CONFIG(SOC_INTEL_COMMON_BLOCK_UART)) {
+		current = acpi_write_dbg2_pci_uart(rsdp, current,
+						uart_get_device(),
+						ACPI_ACCESS_SIZE_DWORD_ACCESS);
+	}
+
 	return acpi_write_hpet(device, current, rsdp);
 }