Enhancements and Bug Fixes for F1Kx Port

[TrongNguyenR]

Description

• Fixed interrupt depth comparison logic to enhance accuracy in handling nested interrupts.
• Resolved parameter mismatch in portmacro.h, aligning function calls and definitions for consistency.
• Addressed FPU stack order issue to ensure correct stack management during FPU operations.
• Improved FPU checking flow, optimizing the process to better handle FPU-related context switching.

Test Steps

The test project here (RH850_F1Kx_CCRH) has been re-conducted, and no regressions were found.

Checklist:

• [ ] I have tested my changes. No regression in existing tests.
• [ ] I have modified and/or added unit-tests to cover the code changes in this Pull Request.

Related Issue

N/A

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