Fix linking error on FreeRTOS when using portYIELD_FROM_ISR

[Thom747]

Pull request

Choose Correct

• bug
• feature

Describe the pull request

The portYIELD_FROM_ISR() macro declares a variable called ulPortYieldRequired.
FreeRTOS assumes ulPortYieldRequired is in the global namespace.
To prevent linking errors, this PR introduces a function in the global namespace called ErpcPortYieldFromISR that then calls portYIELD_FROM_ISR().

To Reproduce

Build eRPC with FreeRTOS.

Expected behavior

eRPC builds as normal.

Desktop (please complete the following information):

• OS: Ubuntu 20.04
• eRPC Version: v1.12.0 and earlier

Steps you didn't forgot to do

• I checked if other PR isn't solving this issue.
• I read Contribution details and did appropriate actions.
• PR code is tested.
• PR code is formatted.
• Allow edits from maintainers pull request option is set (recommended).

[Thom747]

@Hadatko or @MichalPrincNXP This PR has not been handled for over a year now. Could one of you pick this up?

[Thom747]

@Hadatko or @MichalPrincNXP I am once again requesting that you look at this PR. It has not been handled for almost 2 years now and is still relevant.

[MichalPrincNXP]

thank you, I am sorry for the delay