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/common/env_common.c b/common/env_common.c
index 13db7dc..560cad0 100644
--- a/common/env_common.c
+++ b/common/env_common.c
@@ -145,7 +145,7 @@
  * env_aes_cbc_get_key() - Get AES-128-CBC key for the environment
  *
  * This function shall return 16-byte array containing AES-128 key used
- * to encrypt and decrypt the environment. This function must be overriden
+ * to encrypt and decrypt the environment. This function must be overridden
  * by the implementer as otherwise the environment encryption will not
  * work.
  */