flash: Fix spelling of "ERR_TIMOUT"

checkpatch.pl complains about the spelling of ERR_TIMOUT. Since the
error is only used in a handful of files, we rename the error to
ERR_TIMEOUT.

Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/common/flash.c b/common/flash.c
index 587ef60..8766774 100644
--- a/common/flash.c
+++ b/common/flash.c
@@ -112,7 +112,7 @@
  * and no protected sectors are hit.
  * Returns:
  * ERR_OK          0 - OK
- * ERR_TIMOUT      1 - write timeout
+ * ERR_TIMEOUT     1 - write timeout
  * ERR_NOT_ERASED  2 - Flash not erased
  * ERR_PROTECTED   4 - target range includes protected sectors
  * ERR_INVAL       8 - target address not in Flash memory
@@ -185,7 +185,7 @@
 	switch (err) {
 	case ERR_OK:
 		break;
-	case ERR_TIMOUT:
+	case ERR_TIMEOUT:
 		puts ("Timeout writing to Flash\n");
 		break;
 	case ERR_NOT_ERASED: