forked from Mirrors/opensbi

After the hardware hpm counter is stopped, it should not raise any new interrupt as it is already stopped. So add the hw_counter_disable_irq callback to allow the custom pmu device to control this behavior. Signed-off-by: Inochi Amaoto <inochiama@outlook.com> Reviewed-by: Guo Ren <guoren@kernel.org> Reviewed-by: Anup Patel <anup@brainfault.org> Tested-by: Samuel Holland <samuel@sholland.org>