soc/amd/common/block/acpi: Add IVRS kconfig

Add new IVRS kconfig option to control IVRS generation.

BUG=b:190515051

Change-Id: Iad0c6401dbccd2f3f75464a69e4c27f64d3507a5
Signed-off-by: Jason Glenesk <jason.glenesk@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56694
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
diff --git a/src/soc/amd/common/block/acpi/Kconfig b/src/soc/amd/common/block/acpi/Kconfig
index 846db88..b4dcec7 100644
--- a/src/soc/amd/common/block/acpi/Kconfig
+++ b/src/soc/amd/common/block/acpi/Kconfig
@@ -10,3 +10,6 @@
 
 config SOC_AMD_COMMON_BLOCK_ACPI_GPIO
 	bool
+
+config SOC_AMD_COMMON_BLOCK_ACPI_IVRS
+	bool