target/ppc: Fix msgclrp interrupt type

msgclrp matches msgsndp and should clear PPC_INTERRUPT_DOORBELL.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20230530130714.373215-1-npiggin@gmail.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

target/ppc/excp_helper.c

@@ -3071,7 +3071,7 @@ void helper_book3s_msgclrp(CPUPPCState *env, target_ulong rb)
         return;
     }
 
-    ppc_set_irq(env_archcpu(env), PPC_INTERRUPT_HDOORBELL, 0);
+    ppc_set_irq(env_archcpu(env), PPC_INTERRUPT_DOORBELL, 0);
 }
 
 /*