Fix typos

Change-Id: I20745d5f30f9577622e27abf2f45220f026f65ac
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28206
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/platform.h b/platform.h
index 4af1c48..d290afc 100644
--- a/platform.h
+++ b/platform.h
@@ -80,7 +80,7 @@
 #error Unknown architecture
 #endif
 
-/* The next big hunk tries to guess endianess from various preprocessor macros */
+/* The next big hunk tries to guess endianness from various preprocessor macros */
 /* First some error checking in case some weird header has defined both.
  * NB: OpenBSD always defines _BIG_ENDIAN and _LITTLE_ENDIAN. */
 #if defined (__LITTLE_ENDIAN__) && defined (__BIG_ENDIAN__)