Inter-revision diff: cover letter

Comparing v3 (message) to v4 (message) 

--- v3
+++ v4
@@ -1,3 +1,7 @@
+v4:
+Update indent
+Use usleep_range instead of udelay
+
 v3:
 Remove .ndo_get_stats as mentioned by Tobias
 Add __le32 conversion pointed by Mark
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