USB: ccid_bridge: Fix compilation error for 64 bit kernel

In 64 bit %zu should be used for printf length modifer for size_t if %d
is used instead it will throw an error for incompatible argument type. Fix
this by using %zu at appropriate place.

CRs-Fixed: 671900
Change-Id: Ieb8f55f262c699f016f9fcbf09dde5c9a28b1481
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>