MIPS: DEC: use IS_ENABLED()

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/3333/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
1 file changed