camera: Add options to better control video preview size

 * usePreferredPreviewSizeForEffects is needed to fix camcorder effect on
   some MSM8660 devices.
 * Add ignorePreferredPreviewSizeForVideo to use the best size reported
   by the driver instead of the preferred-preview-size-for-video value,
   which may report something really awful.

Adapted for cm-10.1 from similar commits in jellybean.
  https://github.com/CyanogenMod/android_packages_apps_Camera/commit/5ea90585dfce5a38f0c91d2ae07145770a0ea569
  https://github.com/CyanogenMod/android_packages_apps_Camera/commit/7310af07d00910033adbd2dce6aaf8b04cd1f220

Change-Id: I58d4f81333a26dbd6d1ce35037b9c32fbd7d5b69