arm: msm: Add gpiolib support for MSM7200A-family chips.

Hi folks:

Here is a proposed driver which adds gpio and irq support to all currently-supported arm-msm SoCs. Feedback is greatly appreciated. This is the second submission after it was decided that this code belongs in mach-msm instead of the generic drivers/gpio. It did receive some reviewing while submitted there. For completeness, I include those notes here as well:

First-submission revision history:
v2: Cleaned up some housekeeping noise in probe and remove methods.
v3: Incorporated feedback from [email protected].
v4: Incorporated feedback from [email protected].
v5: Incorporated feedback from [email protected], moved code
for resubmission.

Gregory Bean (2):
arm: msm: Add gpiolib support for MSM7200A-family chips.
arm: msm: Add irq support to msm7200a-gpio.

 arch/arm/mach-msm/Kconfig         |    7 +
 arch/arm/mach-msm/Makefile        |    2 +-
 arch/arm/mach-msm/msm7200a-gpio.c |  353 +++++++++++++++++++++++++++++++++++++
 arch/arm/mach-msm/msm7200a-gpio.h |   87 +++++++++
 4 files changed, 448 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/mach-msm/msm7200a-gpio.c
 create mode 100644 arch/arm/mach-msm/msm7200a-gpio.h

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