agx: Don't prefix pseudo-ops

It's not really buying us anything and it clutters the IR.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18804>

src/asahi/compiler/agx_compiler.h

@@ -655,7 +655,7 @@ agx_after_block_logical(agx_block *block)
 {
    /* Search for a p_logical_end */
    agx_foreach_instr_in_block_rev(block, I) {
-      if (I->op == AGX_OPCODE_P_LOGICAL_END)
+      if (I->op == AGX_OPCODE_LOGICAL_END)
          return agx_before_instr(I);
    }