net: sched: pie: fix 64-bit division

Use div_u64() to resolve build failures on 32-bit platforms.

Fixes: 3f7ae5f3dc52 ("net: sched: pie: add more cases to auto-tune alpha and beta")
Signed-off-by: Leslie Monis <[email protected]>
Reported-by: Randy Dunlap <[email protected]>
Tested-by: Randy Dunlap <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
1 file changed