manta: charging led support

also fixes always on

Change-Id: I6899de4bdb7296b5f0f7f6cb388149de6c175390
manta: fixup USB OTG

Change-Id: Ic7c47968d8e3659587270841466fc027460dae61
fix conflicts with other devices

- i9500 and others

Change-Id: Ic58110bba477a9fcafc5402e050a84144175015d