main: fixup log message to fixed type
main: fixup log message to fixed type

By statically casting to a fixed-size type we can ensure the code
compiles the same for 64-bit and 32-bit environments (for the most
part w.r.t this).

Change-Id: If4989c7d3d0879e08be89dfa2a7846cf06dee883
Signed-off-by: Patrick Venture <36c53fa43f47f3fd67cb2fc38031827244d18a1f@google.com>

openbmc/google-ipmi-sys