smdk4412-common: camera: fix EXIF attributes for S5C73M3 sensor

S5C73M3 sensor which is the back camera, doesn't return the EXIF
attributes using V4L2 IOCTL. This sensor interleaves YUV and JPEG
frames along with Metadata which contains the EXIF information.

This patch does the following:
Manually extract the EXIF information from the interleaved metadata
and implement ISO, Flash, Exposure, Exposure Time and Exposure Bias
EXIF attributes for S5C73M3.
Fix incorrect Exposure EXIF attribute that was reporting as 1'.

Change-Id: Id9faa64af498645099cccc9cbf28f2dbdfecd254
(cherry picked from commit b25a0a5a11a2db91744a8003c17e8f5e8306cb53)
[media_codecs] google vpx decoder 4.4 compatible

Change-Id: I26632fcbbdd0c320e332d85c6e5e12201cbd416f
(cherry picked from commit 7f4e947d2ed122934d5882e44b70bbb60db04717)
[libhealthd] Proper battery paths

* 4.4 introduces a new daemon, healthd, that handles battery status
    - resides in: /system/core/healthd
    - BatteryMonitor.cpp iterates through all the *directories* under
      /sys/class/power_supply looking for a file called 'type'
    - if the type == Battery, it assumes this is the location for the
      battery stats for the device. Only the first directory that matches
      this criteria is used.
    - on msm8660/d2/jf/s2 kernels, this search results in:
      /sys/class/power_supply/fuelgauge.
    - To determine capacity, healthd looks at the contents of the
      'capacity' file under this discovered base path. This results
      in /sys/class/power_supply/fuelgauge/capacity on msm8660/d2/jf/s2
      kernels.
    - Unfortunately, this is the wrong path. The capacity file at this
      location returns a large negative number.
    - Other paths like status, voltage_now, and present are also
      incorrectly determined.
  * For comparison, in 4.3 battery statistics gathering was handled by
    frameworks/base/services/jni/com_android_server_BatteryService.cpp
    - BatteryService does a similar search for a file called 'type' with
      the contents of 'Battery'
    - But the search logic is different here: it takes the *last* path that
      matches the criteria.
    - This results in the correct /sys/class/power_supply/battery
  * This patch overrides the discovery mechanism for battery status completely.

Change-Id: I4579c92bba5596eef4dac67b8c0687be50a1d2f5

Conflicts:

	BoardCommonConfig.mk

(cherry picked from commit 3a05ddadae64e5589e7b2f9cfbda89f497763e0b)