USB: ci13xxx_udc: Reduce busywait time from 100msec to 25msec

Commit 037476 "lib: spinlock_debug: Avoid livelock in
do_raw_spin_lock" reduced timeout value in spin_try_lock from
1sec to 62msec. Once this timeout happens, system would then
crash detecting spinlock lockup.
USB driver is currently using 100msec as timeout during busywait
loops with spinlock acquired. It may result in above spin lockup
crash whenever timeout happens due to some hardware issue.
Fix this by reducing timeout to 25msec as confirmed by h/w team.

CRs-Fixed: 487591
Change-Id: Idadcbe4b21fea456256586657ef07dfcb578f5c1
Signed-off-by: Manu Gautam <mgautam@codeaurora.org>