cs1180 去掉0.9的hardcode

Signed-off-by: huhui <huhui@sharkgulf.com>

Application/bsp/cs1180.c

@@ -225,7 +225,7 @@ float cs1180_adc_sample(void)
 	}else {
 		a = a&0x7FFFF;
 	}
-	return ((float)a) / _cs1180_gain * 0.9f;/* 0.9是一个多个板子测试后的值，具体什么原因需要再分析*/
+	return ((float)a) / _cs1180_gain;
 }