Fix compiler warning in logging_caller.c

The logging_caller is a debug component used for logging RPC
call request and response parameters. Since changing the
opstatus from 32-bit to 64-bit, a printf format specifier
warning has appeared. This commit fixes the format specifier.

Signed-off-by: Julian Hall <julian.hall@arm.com>
Change-Id: I7362a66fbcedbf39b73193ddeb6b8e62b8e9dd2b
1 file changed