Input: stmfts - fix a & vs && typo

In stmfts_sysfs_hover_enable_write(), we should check value and
sdata->hover_enabled is all true.

Fixes: 78bcac7 ("Input: add support for the STMicroelectronics FingerTip touchscreen")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200916141941.16684-1-yuehaibing@huawei.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/touchscreen/stmfts.c

@@ -479,7 +479,7 @@ static ssize_t stmfts_sysfs_hover_enable_write(struct device *dev,
 
 	mutex_lock(&sdata->mutex);
 
-	if (value & sdata->hover_enabled)
+	if (value && sdata->hover_enabled)
 		goto out;
 
 	if (sdata->running)