BoardConfig.mk: move common flags to msm7x27a-common folder, add more partitions flags
add releasetools flag and ota asserts.
device_AD683G.mk: move common product copy files to msm7x27a-common folder, rename
ramdisk folder to rootdir, add product copy files for persist folder.
proprietary-files.txt: minimize the blobs for now, also move common blobs to
msm7x27a-common proprietary-files.txt
setup-makefiles.sh: move some of product copy files to vendor boardconfig
add wlan_chip_id for persist
add license from github, add readme
Merge branch 'ics' of github.com:alexforsale/android_device_hisense_AD683G into ics