Fix for Crash dump formatting issues and adding more info to crash dump

[SenRamakri]

This fixes some formatting issues in crash dump and also adds more info like return stack info, privilege level and mode to the crash dump.

[kegilbert]

LGTM, thanks for the fix!

[0xc0170]

Based on the commit msg: Fix line feed issues and add mode info to crash dump - these should be separate commits ? One fixing , another adding mode info.

A fix commit should contain info how it fixes it and why (might be obvious when they are split).

[0xc0170]

See my comment above

[SenRamakri]

@0xc0170 - I have split the commits into 2 commits - One to fix the formatting and other to add more info to crash dump.

[SenRamakri]

@kegilbert and @studavekar - Can you please re-review this PR?

[studavekar]

LGTM 👍

[0xc0170]

/morph build

[mbed-ci]

Build : SUCCESS

Build number : 1382
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/6257/

Triggering tests

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

[mbed-ci]

Exporter Build : SUCCESS

Build number : 1036
Build artifacts/logs : http://mbed-os.s3-website-eu-west-1.amazonaws.com/?prefix=builds/exporter/6257/

[mbed-ci]

Test : SUCCESS

Build number : 1165
Test logs :http://mbed-os-logs.s3-website-us-west-1.amazonaws.com/?prefix=logs/6257/1165

[theotherjimmy]

@0xc0170 Why did you not just merge it?

[adbridge]

Functionality came into 5.8 so fix should also do so

[SenRamakri]

As @adbridge mentioned, please take in this for 5.8 as its very much localized and should not impact any other area.