To get in line with:
8165b57bca21 ("linux/const.h: Extract common header for vDSO")
And silence this tools/perf/ build warning:
Warning: Kernel ABI header at 'tools/include/linux/const.h' differs from latest version at 'include/linux/const.h'
diff -u tools/include/linux/const.h include/linux/const.h
Cc: Adrian Hunter
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Thomas Gleixner
Cc: Vincenzo Frascino
Signed-off-by: Arnaldo Carvalho de Melo