target/sparc: Introduce cpu_put_psr_icc

Isolate linux-user from changes to icc representation.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user/sparc/signal.c

@@ -164,7 +164,7 @@ static void restore_pt_regs(struct target_pt_regs *regs, CPUSPARCState *env)
      */
     uint32_t psr;
     __get_user(psr, &regs->psr);
-    env->psr = (psr & PSR_ICC) | (env->psr & ~PSR_ICC);
+    cpu_put_psr_icc(env, psr);
 #endif
 
     /* Note that pc and npc are handled in the caller. */