init.qcom.rc: Create internal sdcard mountpoint

Change-Id: Idca5115c07a45edaeccbd79b6fe215f849b7bc03
init.qcom.usb.sh: Allow "none" value of persist.sys.usb.config

Change-Id: Id9a02ab31b795dd56c1256dea31e590b50902e26
Merge "init.qcom.rc: Create internal sdcard mountpoint"
Merge "init.qcom.usb.sh: Allow "none" value of persist.sys.usb.config"