MA-9263-3 [Android] Partition: enable GPT partition on imx devices

1. pass androidboot.storage_type to android, 'init' use it to parse
different init.freescale.storage.rc.
2. store new ptable with gpt partition.
3. we use the last LBA as backup gpt table, there is many warning log
when boot, change print to debug

Change-Id: I84070735e9d4c2741b0e240bc1c61b357dabc5b8
Signed-off-by: Sanshan Zhang <sanshan.zhang@nxp.com>