util/cbfstool: Fix typos

Change-Id: I6967a106ce1286d633ddeeb041f582e65f9ea78c
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/28208
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Martin Roth <martinroth@google.com>

util/cbfstool/lz4/lib/lz4frame.c

@@ -184,7 +184,7 @@ static size_t LZ4F_getBlockSize(unsigned blockSizeID)
 }
 
 
-/* unoptimized version; solves endianess & alignment issues */
+/* unoptimized version; solves endianness & alignment issues */
 static U32 LZ4F_readLE32 (const BYTE* srcPtr)
 {
     U32 value32 = srcPtr[0];