[PATCH] initial regulator support

[Sascha Hauer]

This adds simple regulator support. For now this adds a bare minimum of
regulator support: regulators can only be enabled and disabled, no voltage
setting is supported. The only way to associate a device with a regulator
is via devicetree, so platform devices currently cannot use this API.

As a first user The MMC layer gets regulator support, so that the common
case of a gpio enabling a MMC slot is covered.

Sascha

----------------------------------------------------------------
Sascha Hauer (2):
      Add initial regulator support
      mci: Add regulator support

 commands/Kconfig           |   8 ++
 commands/Makefile          |   1 +
 commands/regulator.c       |  33 ++++++
 drivers/Kconfig            |   1 +
 drivers/Makefile           |   1 +
 drivers/mci/mci-core.c     |  18 +++-
 drivers/regulator/Kconfig  |  13 +++
 drivers/regulator/Makefile |   2 +
 drivers/regulator/core.c   | 262 +++++++++++++++++++++++++++++++++++++++++++++
 drivers/regulator/fixed.c  | 103 ++++++++++++++++++
 include/mci.h              |   2 +
 include/regulator.h        |  47 ++++++++
 12 files changed, 489 insertions(+), 2 deletions(-)
 create mode 100644 commands/regulator.c
 create mode 100644 drivers/regulator/Kconfig
 create mode 100644 drivers/regulator/Makefile
 create mode 100644 drivers/regulator/core.c
 create mode 100644 drivers/regulator/fixed.c
 create mode 100644 include/regulator.h