Add Ice Tea SPI communication test.

[mprse]

Description

Provide SPI communication test which uses IceTea Framework.

This PR can not be merged until PR which defines the new HAL API and adds at least one example implementation is merged. Probably then the test will have to be adapted to the final API version.

Detailed description can be found in README.md file in the test case folder.

List of PRs with related tests

PR	Description
RFC SPI: Reference Implementation. #8445	New HAL API definition and example implementations for K66F anf NUCLEO_F429ZI
Add SPI test and test header file. #7976	SPI Green Tea basic test
Add GreeTea SPI communication test. #8216	Two boards Green Tea SPI communication test (closed)
Add Ice Tea SPI communication test. #8443	Two boards Ice Tea SPI communication test
Add one board Green Tea SPI Communication Test #8919	One board Green Tea SPI communication test

Please assign @ithinuel as a reviewer.

Pull request type

[] Fix
[ ] Refactor
[ ] Target update
[ ] Functionality change
[ ] Docs update
[X] Test update
[ ] Breaking change

[cmonr]

@ARMmbed/mbed-os-hal When y'all have a chance.

[mprse]

I pushed an update of the test and documentation.
Example test output on K66F can be found below:

Note that we are still solving test/driver issues.

[mprse]

Looks like its ready. Please review.

Last results can be found below:

Note that reference SPI implementation for K66F does not support lsb ordering, half duplex mode, and slave has some limitations regarding clock polarity and phase. These test cases are failing.

More details about the test can be found here:
https://github.com/mprse/mbed-os/tree/spi_feature_branch_test_com_icetea/TEST_APPS/testcases/test_spi_com

[donatieng]

Great work @mprse! I'll let @ithinuel confirm that he's happy with this.

[cmonr]

/morph build

[mbed-ci]

Build : FAILURE

Build number : 3567
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8443/

[jamesbeyond]

@ARMmbed/mbed-os-maintainers could you put do_not_merge tag on this PR for now,
We need to consolidate this PR with Partner Enablement Team before it can be merged.
nevertheless, we do want CI run on this one to identify any potential issues.

[mprse]

I chcecked the build failures. Symbols from the configuration are undefined, new hal api definition is missing and array sizes are not constant. Can we use only arrays with constant sizes?

[mprse]

Modified Half-Duplex testing and added definition of port which is used for half-duplex mode to the mbed_app.json

[0xc0170]

@mprse Looks like this one is ready for CI?

[cmonr]

@donatieng @ithinuel @jamesbeyond All good? Looks like CI is ready to be started.

[cmonr]

@mprse When you get a chance, please rebase your PR.

I updated the base branch with fixes for Travis CI.

[mprse]

This PR requres PR #8445

[cmonr]

@MarceloSalazar @screamerbg Could y'all look this over sometime soon?

@mprse This needs a rebase.

[cmonr]

@mprse Rebase when available.

[mprse]

Rebased after reference impl has been merged into the feature branch.
This one is ready for review and CI.

[cmonr]

@mprse Please rebase again (sorry). The base branch has been rebased and updated.

[mprse]

@mprse Please rebase again (sorry). The base branch has been rebased and updated.

Yes, I asked @0xc0170 to rebase spi feature branch because of the Travis issues.

[mprse]

Rebased after spi feature branch has been rebased on master to solve Travis issue.

[mprse]

Rebased and fixed style.