kernel: sched: fix cpu cpu_capacity_orig being capped incorrectly

update_cpu_capacity will update cpu_capacity_orig capped with
thermal_cap, in non-WALT case, thermal_cap is previous
cpu_capacity_orig. This caused cpu_capacity_orig being capped
incorrectly.

Test: Build
Bug: 144143594
Change-Id: I1ff9d9c87554c2d2395d46b215276b7ab50585c0
Signed-off-by: Wei Wang <wvw@google.com>
(cherry picked from commit dac65a5a494f8d0c80101acc5d482d94cda6f158)
Signed-off-by: Danny Lin <danny@kdrag0n.dev>
Signed-off-by: Alexander Winkowski <dereference23@outlook.com>