drm/xe/guc: Do not assert CTB state while sending MMIO

During VF post-migration recovery, MMIO communication channel to GuC
is used, despite CTB channel being enabled. This behavior is rooted
in the save-restore architecture specification.

Therefore, a VF driver cannot assert that CTB is disabled while sending
MMIO messages to GuC. Such assertion needs to be PF only, or be removed.

This patch simply removes the assertion.

Signed-off-by: Tomasz Lis <[e-mail]>
Suggested-by: Michał Wajdeczko <[e-mail]>
Reviewed-by: Michal Wajdeczko <[e-mail]>
Signed-off-by: Michal Wajdeczko <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/xe/xe_guc.c

···
 
 	BUILD_BUG_ON(VF_SW_FLAG_COUNT != MED_VF_SW_FLAG_COUNT);
 
-	xe_assert(xe, !xe_guc_ct_enabled(&guc->ct));
 	xe_assert(xe, len);
 	xe_assert(xe, len <= VF_SW_FLAG_COUNT);
 	xe_assert(xe, len <= MED_VF_SW_FLAG_COUNT);