The soong config variables should be controlled via
$(call soong_config_set/get) instead of using the
underlaying variable. Update the comments in the
auto generated makefiles to reflect that.
Bug: 220940864
Test: m mainline_modules_sdks_test && /ssd/aosp-master/out/host/linux-x86/nativetest64/mainline_modules_sdks_test/mainline_modules_sdks_test
Change-Id: I8907d89ceb12e0a1e9ce53220a784e4a69502687
2f9bf4a102