6lowpan: mac802154: fix coding style issues

This patch fixed the coding style issues reported by checkpatch.pl

following issues fixed:
	CHECK: Alignment should match open parenthesis
	WARNING: line over 80 characters
	CHECK: Blank lines aren't necessary before a close brace '}'
	WARNING: networking block comments don't use an empty /* line, use /* Comment...
	WARNING: Missing a blank line after declarations
	WARNING: networking block comments start with * on subsequent lines
	CHECK: braces {} should be used on all arms of this statement

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Tested-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/mac802154/mib.c b/net/mac802154/mib.c
index 15aa2f2..868a040 100644
--- a/net/mac802154/mib.c
+++ b/net/mac802154/mib.c
@@ -175,9 +175,9 @@
 
 	mutex_lock(&priv->hw->phy->pib_lock);
 	res = hw->ops->set_channel(&hw->hw, priv->page, priv->chan);
-	if (res)
+	if (res) {
 		pr_debug("set_channel failed\n");
-	else {
+	} else {
 		priv->hw->phy->current_channel = priv->chan;
 		priv->hw->phy->current_page = priv->page;
 	}
@@ -210,8 +210,9 @@
 		INIT_WORK(&work->work, phy_chan_notify);
 		work->dev = dev;
 		queue_work(priv->hw->dev_workqueue, &work->work);
-	} else
+	} else {
 		mutex_unlock(&priv->hw->phy->pib_lock);
+	}
 }