In some cases we've seen errors in Travis saying that it fails to
download the toolchain due to a bad signature. To prevent that from
happening we're only downloading using standard http instead of https.

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Reviewed-by: Jerome Forissier <jerome.forissier@linaro.org>

- Adds legacy toolchain for use in older edk2 projects, this is the only
  project using the pre 5.x toolchain for now
- Removes the bare metal toolchain
- qemu: Change the path for libraries for GCC5
- fvp: compiler changes for ARM-TF and EDK2
       Update libteec path in initramfs
- mtk: Toolchain and libteec path updates
- juno: Toolchain and libteec path updates

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org> (QEMU, FVP, HiKey)
Tested-by: Pascal Brand <pascal.brand@linaro.org> (QEMU)
Tested-by: Pascal Brand <pascal.brand@linaro.org> (FVP)

Reviewed-by: Joakim Bech <joakim.bech@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

This is the first commit containing helper makefiles to be able to build
OP-TEE easily regardless of previous knowledge of OP-TEE.

To use this particular git and the makefiles, you should have installed
the environment according to the instructions at:
  https://github.com/OP-TEE/manifest/blob/master/README.md



In this commit there are support for building OP-TEE for:
 - QEMU (default)
 - FVP
 - Hikey

More targets will be added later on.

Signed-off-by: Joakim Bech <joakim.bech@linaro.org>
Tested-by: Joakim Bech <joakim.bech@linaro.org> (QEMU, FVP)
Tested-by: Victor Chong <victor.chong@linaro.org> (Hikey)