sched: Fix kABI for task->pasid_activated

category: bugfix
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO


CVE: NA

Intel-SIG: sched: Fix kABI for task->pasid_activated.

-------------------------------------------------

In commit
("sched: Define and initialize a flag to identify valid PASID in the task"),
a new single bit field 'pasid_activated' is added to the middle of
'struct task_struct' that causes kABI breakage.

Fix it by using KABI_FILL_HOLE() API for task->pasid_activated.

Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>