pcmcia: soc_common: switch to a per-socket cpufreq notifier

Switch to a per-socket cpufreq notifier rather than a global notifier.
This allows each socket to be self-contained.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
diff --git a/drivers/pcmcia/soc_common.h b/drivers/pcmcia/soc_common.h
index 18a6df5..f66e2fb 100644
--- a/drivers/pcmcia/soc_common.h
+++ b/drivers/pcmcia/soc_common.h
@@ -75,6 +75,9 @@
 
 	unsigned int		irq_state;
 
+#ifdef CONFIG_CPU_FREQ
+	struct notifier_block	cpufreq_nb;
+#endif
 	struct timer_list	poll_timer;
 	struct list_head	node;
 };