tegra3-common: Update camera wrapper

Fixes the camera crashes because parseInt doesn't like null values.

Change-Id: I805ebc6415e7fcfe2b9b997c895e69d92f07e134
tegra3-common: camera: enable HDR and ZSL

Change-Id: Ieaf1471ef684f9c1a42c1c493ce9acad0c047c8a