wil6210: use writel_relaxed in wil_debugfs_iomem_x32_set

writel_relaxed can be used in wil_debugfs_iomem_x32_set
since there is a wmb call immediately after.
Signed-off-by: Lior David <liord@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/ath/wil6210/debugfs.c

@@ -393,7 +393,8 @@ static int wil_debugfs_iomem_x32_set(void *data, u64 val)
 	if (ret < 0)
 		return ret;
 
-	writel(val, (void __iomem *)d->offset);
+	writel_relaxed(val, (void __iomem *)d->offset);
+
 	wmb(); /* make sure write propagated to HW */
 
 	wil_pm_runtime_put(wil);