kbuild: hardcode genksyms path and remove GENKSYMS variable

Back port from kernel although it's not used since it makes diffing
easier.
commit 88110713ca9dfb ("kbuild: hardcode genksyms path and remove GENKSYMS variable")

Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
1 file changed