TF300T: Changes to fstab.cardhu for mounting. Moving recovery.fstab entries to fstab.cardhu.
Modyfied BoardConfig.mk to include the fstab.cardhu for recovery mounting.
Removed recovery.fstab because it is not needed any more.
Patched common.py and tf300t_ota_from_target_files with the changes from the tf700t device config.
Added mount dir in recovery/init.rc for external_sd

Change-Id: I7e1b3bb665a601f769cb39446075dcf02eec21f5
Merge "TF300T: Changes to fstab.cardhu for mounting. Moving recovery.fstab entries to fstab.cardhu. Modyfied BoardConfig.mk to include the fstab.cardhu for recovery mounting. Removed recovery.fstab because it is not needed any more. Patched common.py and tf300t_ota_from_target_files with the changes from the tf700t device config. Added mount dir in recovery/init.rc for external_sd" into cm-10.2