Add Renesas GR-PEACH and GR-LYCHEE support

[toyowata]

Revised from #83

[GR-PEACH]

External SPI flash (memory mapped) : 8MB
RAM : 10MB
Connectivity : Ethernet

kvstore : memory mapped flash (48 kB)
Update storage : memory mapped flash (4MB)

[GR-LYCHEE]

External SPI flash (memory mapped) : 8MB
RAM : 3MB
Connectivity : Wi-Fi (ESP32)

kvstore : memory mapped flash (48 kB)
Update storage : memory mapped flash (4MB)

mbed-bootloader configs : PelionIoT/mbed-bootloader#56

Test result

GR_PEACH (RZ_A1H)

============================== 4 passed in 31.78s ==============================
2020-01-15 11:05:10,999:tests.conftest:MainThread:INFO: -----  TEST RESULTS SUMMARY  -----
2020-01-15 11:05:11,000:tests.conftest:MainThread:INFO: [ check the complete fail reasons and code locations from this log or html report ]
2020-01-15 11:05:11,000:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_01_get_device_id - (0.861s)
2020-01-15 11:05:11,000:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_02_put_resource - (4.739s)
2020-01-15 11:05:11,000:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_03_get_resource - (1.710s)
2020-01-15 11:05:11,001:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_04_subscribe_resource - (2.451s)

GR_LYCHEE

============================== 4 passed in 39.15s ==============================
2020-01-15 10:58:02,240:tests.conftest:MainThread:INFO: -----  TEST RESULTS SUMMARY  -----
2020-01-15 10:58:02,240:tests.conftest:MainThread:INFO: [ check the complete fail reasons and code locations from this log or html report ]
2020-01-15 10:58:02,241:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_01_get_device_id - (0.772s)
2020-01-15 10:58:02,241:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_02_put_resource - (4.831s)
2020-01-15 10:58:02,242:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_03_get_resource - (1.839s)
2020-01-15 10:58:02,242:tests.conftest:MainThread:INFO: [passed] - dev-client-tests.py::test_04_subscribe_resource - (3.470s)

[iot-pdmc]

Thanks for your changes.
@ARMmbed/pdmc-integrators please review.

[JanneKiiskila]

Ah, some conflicts that need resolving in the README.md and mbed_app.json -files @toyowata , please.

[teetak01]

build-only

[toyowata]

@JanneKiiskila @teetak01 I rebased to master.

[JanneKiiskila]

Thanks, time to merge @teetak01!

[teetak01]

build-only

[iot-pdmc]

Test run: SUCCESS

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Build artifacts

posted-by-tag: https://jenkins-client.isgtesting.com/job/mbed-os-example-pelion/