MIPS: Fix typos and cleanup comment

Signed-off-by: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5535/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
3 files changed