S5PC2XX: Support the cpu revision

S5PC210 SoC have two cpu revisions, and have some difference.
So, support the cpu revision for each revision.

Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

arch/arm/cpu/armv7/s5p-common/cpu_info.c

@@ -26,6 +26,8 @@
 
 /* Default is s5pc100 */
 unsigned int s5p_cpu_id = 0xC100;
+/* Default is EVT1 */
+unsigned int s5p_cpu_rev = 1;
 
 #ifdef CONFIG_ARCH_CPU_INIT
 int arch_cpu_init(void)

arch/arm/include/asm/arch-s5pc2xx/cpu.h

@@ -51,6 +51,12 @@
 #include <asm/io.h>
 /* CPU detection macros */
 extern unsigned int s5p_cpu_id;
+extern unsigned int s5p_cpu_rev;
+
+static inline int s5p_get_cpu_rev(void)
+{
+	return s5p_cpu_rev;
+}
 
 static inline void s5p_set_cpu_id(void)
 {
@@ -61,8 +67,12 @@ static inline void s5p_set_cpu_id(void)
 	 * 0xC200: S5PC210 EVT0
 	 * 0xC210: S5PC210 EVT1
 	 */
-	if (s5p_cpu_id == 0xC200)
+	if (s5p_cpu_id == 0xC200) {
 		s5p_cpu_id |= 0x10;
+		s5p_cpu_rev = 0;
+	} else if (s5p_cpu_id == 0xC210) {
+		s5p_cpu_rev = 1;
+	}
 }
 
 #define IS_SAMSUNG_TYPE(type, id)			\