drivers: clock: gd32: add gd32a50x support

add gd32a50x support

Signed-off-by: YuLong Yao <[email protected]>

Author: feilongfl

drivers/clock_control/clock_control_gd32.c

@@ -113,6 +113,7 @@ static int clock_control_gd32_get_rate(const struct device *dev,
 		break;
 	case RCU_APB1EN_OFFSET:
 #if !defined(CONFIG_SOC_SERIES_GD32VF103) && \
+	!defined(CONFIG_SOC_SERIES_GD32A50X) && \
 	!defined(CONFIG_SOC_SERIES_GD32L23X)
 	case RCU_ADDAPB1EN_OFFSET:
 #endif