input: synaptics_i2c_rmi4: Add regulator support

Add support for regulators to be controlled from driver
side.  This includes configuration and enablement.

Change-Id: I899dec377c4b766749d3f70b80a51f3c21757911
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
diff --git a/include/linux/input/synaptics_dsx.h b/include/linux/input/synaptics_dsx.h
index b779e42..9d03787 100644
--- a/include/linux/input/synaptics_dsx.h
+++ b/include/linux/input/synaptics_dsx.h
@@ -5,6 +5,7 @@
  *
  * Copyright (C) 2012 Alexandra Chin <alexandra.chin@tw.synaptics.com>
  * Copyright (C) 2012 Scott Lin <scott.lin@tw.synaptics.com>
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -47,6 +48,7 @@
 	bool x_flip;
 	bool y_flip;
 	bool regulator_en;
+	bool i2c_pull_up;
 	unsigned irq_gpio;
 	unsigned long irq_flags;
 	unsigned reset_gpio;