mfd: Add placeholders for WM8350 client devices

In order to avoid merge problems further down the line add placeholders
for several of the WM8350 client devices and register them, otherwise
the patches adding the client devices will all try to update the same
code.

Also remove redundant checks for null regulator platform devices while
we're at it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Samuel Ortiz <sameo@openedhand.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
diff --git a/include/linux/mfd/wm8350/audio.h b/include/linux/mfd/wm8350/audio.h
index 43342f7..217bb22 100644
--- a/include/linux/mfd/wm8350/audio.h
+++ b/include/linux/mfd/wm8350/audio.h
@@ -13,6 +13,8 @@
 #ifndef __LINUX_MFD_WM8350_AUDIO_H_
 #define __LINUX_MFD_WM8350_AUDIO_H_
 
+#include <linux/platform_device.h>
+
 #define WM8350_CLOCK_CONTROL_1                  0x28
 #define WM8350_CLOCK_CONTROL_2                  0x29
 #define WM8350_FLL_CONTROL_1                    0x2A
@@ -589,4 +591,8 @@
 #define WM8350_IRQ_CODEC_MICSCD			41
 #define WM8350_IRQ_CODEC_MICD			42
 
+struct wm8350_codec {
+	struct platform_device *pdev;
+};
+
 #endif