GHS: Enable language-dependent generator expressions

Neal Vrequested to merge
NealV/cmake:add_lang_expressions_ghs into master

Add Green Hills MULTI to the list of generators checked for the COMPILE_LANGUAGE, COMPILE_LANG_AND_ID, LINK_LANGUAGE, and LINK_LANG_AND_ID generator expressions, since these are supported by the generator.

Fixes: #24262 (closed)

Edited by Brad King

Merge request reports