feat(ulp): use cmakev2 linker script preprocessing

Register ULP memory linker scripts with target_linker_script so CMake v2 handles preprocessing and attachment through the component graph.

Keep the generated legacy outputs named .ld by stripping only the .in suffix, and pass full linker script paths to support direct ld invocation.

tools/cmakev2/build.cmake

@@ -599,12 +599,17 @@ function(idf_build_library library)
     # seen before any section-placement script references them.
     foreach(script IN LISTS memory_scripts other_scripts)
         get_filename_component(script_dir "${script}" DIRECTORY)
-        get_filename_component(script_name "${script}" NAME)
         # Add linker script directory to the linker search path.
         target_link_directories("${library}" INTERFACE "${script_dir}")
-        # Add linker script to link. Regarding the usage of SHELL, see
+        # Add linker script to link. Use the full path because direct ld
+        # resolves -T against only the -L directories that came before it, while
+        # CMake may emit link options before link directories. Keep -L above so
+        # linker scripts can still INCLUDE siblings by name.
+        # Regarding the usage of SHELL, see
         # https://cmake.org/cmake/help/latest/command/target_link_options.html#option-de-duplication
-        target_link_options("${library}" INTERFACE "SHELL:-T ${script_name}")
+        # Quote the path: SHELL: strings are re-split on spaces, so an unquoted
+        # path containing spaces would fall apart.
+        target_link_options("${library}" INTERFACE "SHELL:-T \"${script}\"")
         # Add the linker script as a dependency to ensure the executable is
         # re-linked if the script changes.
         set_property(TARGET "${library}" APPEND PROPERTY INTERFACE_LINK_DEPENDS "${script}")