MIPS: EMMA2RH: Remove emma2rh_sw_irq_base

Let's use immediate value, instead.  This also saves memory footprint,
and probably a little bit faster.

Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi@necel.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/emma/markeins/irq.c b/arch/mips/emma/markeins/irq.c
index 86b9b6a..c0f9d46 100644
--- a/arch/mips/emma/markeins/irq.c
+++ b/arch/mips/emma/markeins/irq.c
@@ -53,7 +53,7 @@
  *
  */
 
-extern void emma2rh_sw_irq_init(u32 base);
+extern void emma2rh_sw_irq_init(void);
 extern void emma2rh_gpio_irq_init(u32 base);
 extern void emma2rh_irq_init(void);
 extern void emma2rh_irq_dispatch(void);
@@ -103,7 +103,7 @@
 
 	/* init all controllers */
 	emma2rh_irq_init();
-	emma2rh_sw_irq_init(EMMA2RH_SW_IRQ_BASE);
+	emma2rh_sw_irq_init();
 	emma2rh_gpio_irq_init(EMMA2RH_GPIO_IRQ_BASE);
 	mips_cpu_irq_init();