regulator: core kbuild files

This patch adds kernel build support for the regulator core.
Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Liam Girdwood <lg@opensource.wolfsonmicro.com>

arch/arm/Kconfig

@@ -1225,6 +1225,8 @@ source "drivers/dma/Kconfig"
 
 source "drivers/dca/Kconfig"
 
+source "drivers/regulator/Kconfig"
+
 source "drivers/uio/Kconfig"
 
 endmenu

drivers/Makefile

@@ -97,3 +97,4 @@ obj-$(CONFIG_PPC_PS3)		+= ps3/
 obj-$(CONFIG_OF)		+= of/
 obj-$(CONFIG_SSB)		+= ssb/
 obj-$(CONFIG_VIRTIO)		+= virtio/
+obj-$(CONFIG_REGULATOR)		+= regulator/

drivers/regulator/Kconfig

+menu "Voltage and Current regulators"
+
+config REGULATOR
+	bool "Voltage and Current Regulator Support"
+	default n
+	help
+	  Generic Voltage and Current Regulator support.
+
+	  This framework is designed to provide a generic interface to voltage
+	  and current regulators within the Linux kernel. It's intended to
+	  provide voltage and current control to client or consumer drivers and
+	  also provide status information to user space applications through a
+	  sysfs interface.
+
+	  The intention is to allow systems to dynamically control regulator
+	  output in order to save power and prolong battery life. This applies
+	  to both voltage regulators (where voltage output is controllable) and
+	  current sinks (where current output is controllable).
+
+	  This framework safely compiles out if not selected so that client
+	  drivers can still be used in systems with no software controllable
+	  regulators.
+
+	  If unsure, say no.
+
+config REGULATOR_DEBUG
+	bool "Regulator debug support"
+	depends on REGULATOR
+	help
+	  Say yes here to enable debugging support.
+
+config REGULATOR_FIXED_VOLTAGE
+	tristate
+	default n
+	select REGULATOR
+
+config REGULATOR_VIRTUAL_CONSUMER
+	tristate "Virtual regulator consumer support"
+	default n
+	select REGULATOR
+	help
+	  This driver provides a virtual consumer for the voltage and
+          current regulator API which provides sysfs controls for
+          configuring the supplies requested.  This is mainly useful
+          for test purposes.
+
+          If unsure, say no.
+
+endmenu

drivers/regulator/Makefile

+#
+# Makefile for regulator drivers.
+#
+
+
+obj-$(CONFIG_REGULATOR) += core.o
+obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o
+obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o
+
+ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG