usb: gadget: Send DSR linestate on DTR high from host
When the host PC sends a DTR high during DUN call, it expects to get a DSR signal from the modem in reply. Add necessary support for that. Change-Id: If46c4b75fa6210c2b15cd2880bc93461fa3a4e89 Signed-off-by:Ajay Agarwal <ajaya@codeaurora.org> Signed-off-by:
Chandana Kishori Chiluveru <cchiluve@codeaurora.org>
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