usb: misc: nb7vpq904m: fix suspend/resume issue

when suspend happen with empty OTG cable,
then insert USB 3 thumb drive,
after resume, thumb drive work in USB 2 mode.

currently in suspend function only disable redriver,
but no operation in resume function.

fix it by enable redriver during resume.

Change-Id: I57535dd24317cce77e40eb8ca30a2203af6776b0
Signed-off-by: Linyu Yuan <linyyuan@codeaurora.org>