drm/xe/oa: Fix "Missing outer runtime PM protection" warning

In the Linux kernel, the following vulnerability has been resolved:

drm/xe/oa: Fix "Missing outer runtime PM protection" warning

Fix the following drm_WARN:

[953.586396] xe 0000:00:02.0: [drm] Missing outer runtime PM protection

...

<4> [953.587090] ? xe_pm_runtime_get_noresume+0x8d/0xa0 [xe]

<4> [953.587208] guc_exec_queue_add_msg+0x28/0x130 [xe]

<4> [953.587319] guc_exec_queue_fini+0x3a/0x40 [xe]

<4> [953.587425] xe_exec_queue_destroy+0xb3/0xf0 [xe]

<4> [953.587515] xe_oa_release+0x9c/0xc0 [xe]

(cherry picked from commit b107c63d2953907908fd0cafb0e543b3c3167b75)