net: usb: Submit RX URBs regardless of whether QMI channel is opened

During interface resume rmnet control driver submits interrupt URB
only if QMI channel is opened by userspace. There is a possibility
that interface is resuming from suspend and QMI channel is still not
opened, in that case interrupt URB will never get submitted again.
Hence always submit the interrupt URB and do not depend on if userspace
has opened the QMI channel.

CRs-Fixed: 388611
Change-Id: Iffe203dee3b3f757affbba3cd9dd12e2cd260d34
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>