soc: renesas: rcar-sysc: Improve rcar_sysc_power() debug info

Print requested power domain state.

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Simon Horman <[e-mail]>

drivers/soc/renesas/rcar-sysc.c

···
  out:
 	spin_unlock_irqrestore(&rcar_sysc_lock, flags);
 
-	pr_debug("sysc power domain %d: %08x -> %d\n",
+	pr_debug("sysc power %s domain %d: %08x -> %d\n", on ? "on" : "off",
 		 sysc_ch->isr_bit, ioread32(rcar_sysc_base + SYSCISR), ret);
 	return ret;
 }