x86: Use the ACPI table writer

Use the new ACPI writer to write the ACPI tables. At present this is all
done in one monolithic function. Future work will split this out.

Unfortunately the QFW write_acpi_tables() function conflicts with the
'writer' version, so disable that for sandbox.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/test/dm/acpi.c b/test/dm/acpi.c
index a1d70b5..49b71be 100644
--- a/test/dm/acpi.c
+++ b/test/dm/acpi.c
@@ -322,8 +322,8 @@
 }
 DM_TEST(dm_test_acpi_basic, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
 
-/* Test acpi_setup_base_tables */
-static int dm_test_acpi_setup_base_tables(struct unit_test_state *uts)
+/* Test setup_ctx_and_base_tables */
+static int dm_test_setup_ctx_and_base_tables(struct unit_test_state *uts)
 {
 	struct acpi_rsdp *rsdp;
 	struct acpi_rsdt *rsdt;
@@ -369,7 +369,7 @@
 
 	return 0;
 }
-DM_TEST(dm_test_acpi_setup_base_tables,
+DM_TEST(dm_test_setup_ctx_and_base_tables,
 	UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
 
 /* Test 'acpi list' command */