MIPS: EMMA2RH: Replace EMMA2RH_IRQ_INTxx with EMMA2RH_IRQ_INT(n)

Don't duplicate worthless lines.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1389/


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