ffs inet: Don't close ep0 descriptor on service startup
ffs inet: Don't close ep0 descriptor on service startup

When last process closes ep0 of runnig ffs function
whole gadget will be unbounded.

Some gadgets may have many functions in this config
and if one function is not responding rest of them
can be used.

This patch removes close() on ep0 when service has been
started. This ensures that even if user service will get
for example SIGKILL form OOM, we will still have one opened
descriptor. This will keep gadget alive and allow to use
other functions in current configuration.

Change-Id: Iffc0855da6b74cbd044bf84a3189739a22aa16a0
Signed-off-by: Krzysztof Opasiak <8064eda6f94b3817252b7d7649cf754592f63500@samsung.com>

gadgetd/gadgetd,gadgetd/gadgetd,gadgetd/gadgetd