MAX8998 changes for RTC

Hi.

This patchset is to support the RTC provided by the Maxim 8998 chip. For this first, needs i2c interface changes and interrupts support of max8998 mfd driver.

Changes since v1:
- Fix missing braces of 3/3 patch from v1 review.
- The rest is same with v1.

Joonyoung Shim (3):
mfd: MAX8998: Use struct i2c_client to argument on i2c operation functions
mfd: MAX8998: Add interrupts support
rtc: Add MAX8998 rtc driver

 drivers/mfd/Kconfig                 |    2 +-
 drivers/mfd/Makefile                |    2 +-
 drivers/mfd/max8998-irq.c           |  255 +++++++++++++++++++++++++++++
 drivers/mfd/max8998.c               |   78 +++++++--
 drivers/regulator/max8998.c         |   17 ++-
 drivers/rtc/Kconfig                 |   10 ++
 drivers/rtc/Makefile                |    1 +
 drivers/rtc/rtc-max8998.c           |  299 +++++++++++++++++++++++++++++++++++
 include/linux/mfd/max8998-private.h |  106 +++++++++---
 include/linux/mfd/max8998.h         |   11 +-
 10 files changed, 725 insertions(+), 56 deletions(-)
 create mode 100644 drivers/mfd/max8998-irq.c
 create mode 100644 drivers/rtc/rtc-max8998.c