FROMLIST: kbuild: add __ld-ifversion and linker-specific macros

Add macros for testing both linker name and version.

Bug: 62093296
Bug: 67506682
Change-Id: Icbb13e9bb889017cd4a7457a62dea7e0335c53b5
(am from https://patchwork.kernel.org/patch/10085789/

)
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>