Patch whitespace inconsistencies in platform lib file

[kegilbert]

Description

Patch whitespace inconsistencies in platform lib file.

Followup to #8487

Pull request type

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

[cmonr]

@kegilbert Gonna need that description updated a bit. Looking at the file changes, the title feels more descriptive than the actual decsription :)

[NirSonnenschein]

/morph export-build

[mbed-ci]

Exporter Build : SUCCESS

Build number : 3222
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8734/

[NirSonnenschein]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 3620
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/8734/

Triggering tests

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

[mbed-ci]

Exporter Build : SUCCESS

Build number : 3228
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/8734/

[kegilbert]

Updated the description

[mbed-ci]

Test : FAILURE

Build number : 3403
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/8734/3403

[cmonr]

Various netsocket echo failures. not related to PR.

Will restart when able.

[0xc0170]

Note: This PR is now a part of a rollup PR (#8753).

In order to expedite remaining CI testing, this PR has been bundled into the above rollup PR.

No further work is needed here, as once that PR is merged, this PR will also be closed and marked as merged.

If any more commits are made in this PR, this PR will remain open and have to go through CI on its own.

[cmonr]

Please ignore. I derped.