[RIL] 64-bit compile issues

- size_t use %zu format
- All in RLOG, so zero functional impact
- suppress unused argument warnings

Change-Id: I99d7221a13de6f12bfcf93ef8fe4521669f1f783
Signed-off-by: Alvin Francis <nivlafx@gmail.com>

Conflicts:
	reference-ril/reference-ril.c