efi: arm: Add EFI app support

Add support for EFI apps on ARM. This includes start-up and relocation
code, plus a link script and some compiler setting changes.

Signed-off-by: Simon Glass <sjg@chromium.org>
[agraf: Remove whitespace change, add kconfig dep]
Signed-off-by: Alexander Graf <agraf@suse.de>
6 files changed