MAX_CLOCKS is only available in the kernel UAPI headers and not libc
headers. Switch back to a hardcoded value. This value is a stable ABI
anyways and matches the other fallback definitions.
Fixes: d3c49ee062f7 ("lsclocks: use MAX_CLOCKS, improve indention") Signed-off-by: Thomas Weißschuh <thomas@t-8ch.de>