ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs

Previously the irq init used s3c24xx_init_irq and an additional
arch_initcall to add the cpu specific irqs.

To be able to simplyfy the irq init later, create a new function
s3c2443_init_irq, which then calls s3c24xx_init_irq but also adds
the cpu specific irqs.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-s3c24xx/mach-smdk2443.c

@@ -140,7 +140,7 @@ MACHINE_START(SMDK2443, "SMDK2443")
 	/* Maintainer: Ben Dooks <ben-linux@fluff.org> */
 	.atag_offset	= 0x100,
 
-	.init_irq	= s3c24xx_init_irq,
+	.init_irq	= s3c2443_init_irq,
 	.map_io		= smdk2443_map_io,
 	.init_machine	= smdk2443_machine_init,
 	.timer		= &s3c24xx_timer,

arch/arm/plat-s3c24xx/irq.c

@@ -935,10 +935,11 @@ static int s3c2443_add_sub(unsigned int base,
 	return 0;
 }
 
-static int s3c2443_irq_add(struct device *dev,
-				  struct subsys_interface *sif)
+void __init s3c2443_init_irq(void)
 {
-	printk("S3C2443: IRQ Support\n");
+	pr_info("S3C2443: IRQ Support\n");
+
+	s3c24xx_init_irq();
 
 	s3c2443_add_sub(IRQ_CAM, s3c2443_irq_demux_cam, &s3c2443_irq_cam,
 			IRQ_S3C2440_CAM_C, IRQ_S3C2440_CAM_P);
@@ -956,20 +957,5 @@ static int s3c2443_irq_add(struct device *dev,
 	s3c2443_add_sub(IRQ_WDT, s3c2443_irq_demux_wdtac97,
 			&s3c2443_irq_wdtac97,
 			IRQ_S3C2443_WDT, IRQ_S3C2443_AC97);
-
-	return 0;
 }
-
-static struct subsys_interface s3c2443_irq_interface = {
-	.name		= "s3c2443_irq",
-	.subsys		= &s3c2443_subsys,
-	.add_dev	= s3c2443_irq_add,
-};
-
-static int __init s3c2443_irq_init(void)
-{
-	return subsys_interface_register(&s3c2443_irq_interface);
-}
-
-arch_initcall(s3c2443_irq_init);
 #endif

arch/arm/plat-samsung/include/plat/s3c2443.h

@@ -25,6 +25,8 @@ extern void s3c2443_init_clocks(int xtal);
 extern  int s3c2443_baseclk_add(void);
 
 extern void s3c2443_restart(char mode, const char *cmd);
+
+extern void s3c2443_init_irq(void);
 #else
 #define s3c2443_init_clocks NULL
 #define s3c2443_init_uarts NULL