[kojiws]

Description

This PR supersedes #557.

whTest_Flash() checks a port's whFlashCb flash driver and is meant to run on the target.
It lived in wh_test_nvm_flash.c, so linking it also pulled in that file's RAM-simulated flash: 2 MB of static buffers.
That does not fit targets with small local RAM.

Changes

• Move whTest_Flash() unchanged to new test/wh_test_flash.c / test/wh_test_flash.h. It depends only on wh_flash.h and wh_flash_unit.h, with no ramsim and no server guard.
• wh_test_nvm_flash.c includes the new header and still calls whTest_Flash() on the ramsim and POSIX file backends.
• Drop the whTest_FlashCfg() prototype from wh_test_nvm_flash.h. It had no implementation; ports now include wh_test_flash.h instead.

Testing

• make run with NOCRYPTO=1
• make run with NOCRYPTO=1 ASAN=1 NVM_FLASH_CRC=1
• Linked wh_test_flash.c alone with wh_flash_unit.c, wh_flash_ramsim.c and a small main(), without server or client defines. It passes, and the only test symbol in the binary is whTest_Flash.

[Copilot]

🟢 Approval recommended

No active review issues remain for the standalone flash-test extraction.

No open issues 🎉

What changed in this PR

Separates the low-level flash driver test from the NVM flash suite so embedded targets can link it without pulling in 2 MB of RAM-simulation buffers.

Changes:

• Moves whTest_Flash() unchanged into a standalone source file without a server guard.
• Keeps the NVM suite’s RAM-simulator and POSIX-backend calls using the new header.
• Replaces the unimplemented whTest_FlashCfg() declaration with the actual whTest_Flash() API in the standalone header.

File	Description
test/​wh_test_nvm_flash.h	Removes the unimplemented whTest_FlashCfg() declaration.
test/​wh_test_nvm_flash.c	Includes the new header and removes the extracted function body.
test/​wh_test_flash.h	Declares the standalone flash test and documents its destructive behavior.
test/​wh_test_flash.c	Houses the unchanged flash test independently of the NVM suite.

_{Review effort: Balanced}