Added SPIFFS_truncate function#218

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davctv:spiffs-truncate-add

Commits on Jul 28, 2018

Added SPIFFS_truncate function

davide
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davide
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Commits on Jul 30, 2018

Modified type for length to u32_t
davctv
committed
Added length also for SPIFFS_READ_ONLY defined section
davctv
committed