This reverts commit71c67a31f0. Commit117acf5c29("powerpc/Makefile: Always pass --synthetic to nm if supported") removed the only conditional definition of $(NM), so we can revert our temporary bodge to avoid Kconfig recursion and go back to passing $(NM) through to the 'tools-support-relr.sh' when detecting support for RELR relocations. Signed-off-by: Will Deacon <will@kernel.org>