Try another tag name when looking for project files.

[alukichev]

Between STM32CubeMX versions 4.12.0 and 4.20.1 there has been a change in generated .cproject file format: source file paths are specified by "locationURI" tag in the older version and by "location" in another. This helps locate source files in both older and newer .cproject files.

Signed-off-by: Alexander Lukichev [email protected]