pvr: Order tile buffer EOT emits to be last

pvr: Order tile buffer EOT emits to be last

Tile buffer emits required a load from the tile buffer into the
output regs, so they must be placed at the end of the EOT program
as to not corrupt the output register emits.

This commit orders the emit state to place output register emits
first, and tile buffer emits last.

dEQP test fixed:
  dEQP-VK.renderpass.suballocation.attachment.4.422
  ... and others from the dEQP-VK.renderpass.suballocation.*

Signed-off-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25584>