arm:cache:trats: Enable PL310 L2 Cache Controller at TRATS Samsung board

Enable the PL310 L2 cache controller at TRATS Samsung board.
Signed-off-by: NLukasz Majewski <l.majewski@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NMinkyu Kang <mk7.kang@samsung.com>

include/configs/trats.h

@@ -42,8 +42,10 @@
 #define CONFIG_DISPLAY_CPUINFO
 #define CONFIG_DISPLAY_BOARDINFO
 
-/* Keep L2 Cache Disabled */
-#define CONFIG_SYS_L2CACHE_OFF
+#ifndef CONFIG_SYS_L2CACHE_OFF
+#define CONFIG_SYS_L2_PL310
+#define CONFIG_SYS_PL310_BASE	0x10502000
+#endif
 
 #define CONFIG_SYS_SDRAM_BASE		0x40000000
 #define CONFIG_SYS_TEXT_BASE		0x63300000