ARM: EXYNOS4: Add SYSTIMER IO Address mapping for MCT

The MCT(Multi-Core Timer) is used for implementing kernel timers
for EXYNOS4210.
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-exynos4/cpu.c

@@ -31,6 +31,11 @@ extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq);
 /* Initial IO mappings */
 static struct map_desc exynos4_iodesc[] __initdata = {
 	{
+		.virtual	= (unsigned long)S5P_VA_SYSTIMER,
+		.pfn		= __phys_to_pfn(EXYNOS4_PA_SYSTIMER),
+		.length		= SZ_4K,
+		.type	 	= MT_DEVICE,
+	}, {
 		.virtual	= (unsigned long)S5P_VA_SYSRAM,
 		.pfn		= __phys_to_pfn(EXYNOS4_PA_SYSRAM),
 		.length		= SZ_4K,

arch/arm/mach-exynos4/include/mach/map.h

@@ -44,6 +44,7 @@
 #define EXYNOS4_PA_PMU			0x10020000
 #define EXYNOS4_PA_CMU			0x10030000
 
+#define EXYNOS4_PA_SYSTIMER		0x10050000
 #define EXYNOS4_PA_WATCHDOG		0x10060000
 #define EXYNOS4_PA_RTC			0x10070000