USB: gadget: Add support to disable interrupt and timer

'commit b4ae4b99 ("USB: gadget: Perform BAM reset as part of
disconnect processing")' adds changes to disble USB interrupt before
scheduling disconnect work in function drivers which uses BAM2BAM mode
and reenbale it once either disconnect processing and BAM reset is done
or one second timer expires to enable forcefully.

Add required changes to ci13xxx msm which adds functions to disable
and enable interrupts and timer to enable interrupts forcefully

Change-Id: I9db575756519ebb833076bca8f0748e139eb9d00
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>