MIPS: Lantiq: Fix typo in "endianness" in dma.c

Correct spelling typo ENDIANESS to ENDIANNESS in arc/mips/lantiq/xway/dma.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Cc: trivial@kernel.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/4613/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>