tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/net/stmmac/gmac.c b/drivers/net/stmmac/gmac.c
index b624bb5..52586ee 100644
--- a/drivers/net/stmmac/gmac.c
+++ b/drivers/net/stmmac/gmac.c
@@ -112,7 +112,7 @@
 			      " (threshold = %d)\n", txmode);
 		csr6 &= ~DMA_CONTROL_TSF;
 		csr6 &= DMA_CONTROL_TC_TX_MASK;
-		/* Set the transmit threashold */
+		/* Set the transmit threshold */
 		if (txmode <= 32)
 			csr6 |= DMA_CONTROL_TTC_32;
 		else if (txmode <= 64)