RTCState only represents a Motorola MC146818 model,
not any RTC chipset. Rename the structure as MC146818RtcState
using:

  $ sed -i -e s/RTCState/MC146818RtcState/g $(git grep -wl RTCState)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230210233116.80311-2-philmd@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>