coreboot: Replace all IS_ENABLED(CONFIG_XXX) with CONFIG(XXX)

This patch is a raw application of

 find src/ -type f | xargs sed -i -e 's/IS_ENABLED\s*(CONFIG_/CONFIG(/g'

Change-Id: I6262d6d5c23cabe23c242b4f38d446b74fe16b88
Signed-off-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31774
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/soc/intel/broadwell/chip.c

@@ -30,7 +30,7 @@ static struct device_operations pci_domain_ops = {
 	.read_resources    = &pci_domain_read_resources,
 	.set_resources     = &pci_domain_set_resources,
 	.scan_bus          = &pci_domain_scan_bus,
-#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
+#if CONFIG(HAVE_ACPI_TABLES)
 	.write_acpi_tables = &northbridge_write_acpi_tables,
 #endif
 };