Move this table over to use a writer function, moving the code from the
x86 implementation.
Add a pointer to the DSDT in struct acpi_ctx so we can reference it later.
Disable this table for sandbox since we don't actually compile real ASL
code.
Signed-off-by: Simon Glass <sjg@chromium.org>
Use the new ACPI writer to write the base tables at the start of the area,
moving this code from the x86 implementation.
Signed-off-by: Simon Glass <sjg@chromium.org>