internal: Only build on x86 and mipsel

internal_init() explicitly fails on everything but x86 and mipsel.
Instead, we can just never build the internal programmer on other
architectures and drop a lot of #if boilerplate.

Change-Id: I672ddab0415df3baa49ff39a1c9db1b41d8143a4
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/22671
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2 files changed