Adding Laird BL654 as a new MTB target

[ashok-rao]

Description

NOTE: This PR is same as #8375 . Closing the previous one (8375) and creating this due to (possible) merge conflicts as commented by @cmonr here and here Adding new MTB target for Laird BL654.

Pull request type

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

New Target addition for Laird BL654 module.

Greentea logs also attached here again for quick access.
BL654_ARMCC_GT_Pass_log.txt
BL654_GCC_GT_Pass_log.txt
BL654_IAR_GT_Pass_log.txt

@cmonr @0xc0170 : I'm now closing the PR #8375 and opening this one. Could you please re-review? Thanks.

[cmonr]

Just some minor nits, and we can start CI

[cmonr]

Minor nit. Could you fix the indentation?

[cmonr]

Alignment nit

[ashok-rao]

@cmonr : Thanks! Review comments now addressed!

[cmonr]

/morph build

[mbed-ci]

Build : FAILURE

Build number : 3388
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8454/

[cmonr]

This target is either missing QSPI pin definitions, or should not have QSPI marked as a supported feature.

[ashok-rao]

Thanks @cmonr & @0xc0170 . QSPI pins now added. Can you please check again?

[cmonr]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 3401
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8454/

Triggering tests

/morph test
/morph export-build
/morph mbed2-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 3031
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8454/

[mbed-ci]

Test : SUCCESS

Build number : 3201
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/8454/3201

[ashok-rao]

Thanks @cmonr and @0xc0170 :-)