crespo: libcamera: fix issues with the aosp camera in 4.3

- Do not send command to camera unless preview is started
  (fix 4.3 AOSP camera crash)
- Send touch AF command regardless of previous state
  (required to actually trigger touch AF at the new area)

https://github.com/CyanogenMod/android_device_samsung_aries-common/commit/153090a8285c6e9193d88b86008e7f2e506ba177

Change-Id: I0c00dc426ea6028d6687280c4d5826b25319ad8a
crespo: Add libskia_legacy

Change-Id: If2ea60107e47faf52f93ef4bf66d5a7d249c6634
Merge remote-tracking branch 'cm/cm-10.2' into cm-10.2