Various, unrelated tree-wide typo fixes.

    Fix a number of typos, including:

     * "compatble" -> "compatible"
     * "eanbeld" -> "enabled"
     * "envrionment" -> "environment"
     * "FTD" -> "FDT" (for "flattened device tree")
     * "ommitted" -> "omitted"
     * "overriden" -> "overridden"
     * "partiton" -> "partition"
     * "propogate" -> "propagate"
     * "resourse" -> "resource"
     * "rest in piece" -> "rest in peace"
     * "suport" -> "support"
     * "varible" -> "variable"

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
diff --git a/post/cpu/ppc4xx/ether.c b/post/cpu/ppc4xx/ether.c
index 4c9a39b..8a4c56b 100644
--- a/post/cpu/ppc4xx/ether.c
+++ b/post/cpu/ppc4xx/ether.c
@@ -21,7 +21,7 @@
  *   CONFIG_SYS_POST_ETH_LOOPS - Number of test loops. Each loop
  *     is tested with a different frame length. Starting with
  *     MAX_PACKET_LENGTH and going down to MIN_PACKET_LENGTH.
- *     Defaults to 10 and can be overriden in the board config header.
+ *     Defaults to 10 and can be overridden in the board config header.
  */
 
 #include <post.h>