Fix MISRA_C_2012 rule 13.2 violation (#855)

Fix MISRA_C_2012 rule 13.2 violation (#855)

* Assign volatile variables to local non-volatile variables before read

* Fix stack macro overflow check volatile access

* Explicit the read order of volatile variable

* Fix issue : ISO C90 forbids mixed declarations and code

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Co-authored-by: Ubuntu <ubuntu@ip-172-31-34-245.ap-northeast-1.compute.internal>
Co-authored-by: chinglee-iot <61685396+chinglee-iot@users.noreply.github.com>
Co-authored-by: Monika Singh <moninom@amazon.com>
Co-authored-by: Gaurav-Aggarwal-AWS <33462878+aggarg@users.noreply.github.com>