GNexusParts : Fix gpu speed formatting

Replace "," with "."

Change-Id: I66fab1b49817e32ec832a60a62fac1c4aba4d087
tuna: enable otg storage

Patch-set 3: Ideo from grouper one

Change-Id: I2ae356a39d8cd250eae93322913d43663c5a10eb