pvr: Fix argument comments in render job submission.

Signed-off-by: Rajnesh Kanwal <rajnesh.kanwal@imgtec.com>
Reviewed-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Part-of: <!15709>
33 jobs for !15709 with staging/implement_vk_sync in 5 minutes and 23 seconds (queued for 3 seconds)
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