Correct single misspelling of "consitant" in source tree.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
diff --git a/include/config_distro_defaults.h b/include/config_distro_defaults.h
index 5d18a4b..1ecc0bb 100644
--- a/include/config_distro_defaults.h
+++ b/include/config_distro_defaults.h
@@ -10,7 +10,7 @@
 /*
  * List of all commands and options that when defined enables support for
  * features required by distros to support boards in a standardised and
- * consitant manner.
+ * consistent manner.
  */
 
 #define CONFIG_BOOTP_BOOTPATH