USB: Increase debounce time for DISCONNECT processing (revised)

Original patch: aosp/1539944

Bug: 207057578
Test: See details in b/209342433
Change-Id: I7ff58a1a9755939ccb26dad61969902ec91f2225
Signed-off-by: James Wei <jameswei@google.com>
(cherry picked from commit 06626cef)
Merged-In: I7ff58a1a9755939ccb26dad61969902ec91f2225