taoshan: enable full ntfs support for external storages.

Change-Id: I7bd3edb1443b2e770fcaa51fe7684d86ae804fba
do not optimize for size.

we have enough partition space for the kernel(16mb), don't do anything at the cost of performance

Change-Id: Ib16e32f429c6540a87a760c7a632d3a79c3909b6
fixup a forbidden warning.

Change-Id: Iaf58d0ddde20e6f9f6c249b8e37edfc97c22cc4b