config: arm: exynos5250: Define CONFIG_SYS_CACHELINE_SIZE

XHCI stack driver needs this to align buffers to
CacheLine boundary. So define the same to be '64'
Signed-off-by: NVivek Gautam <gautam.vivek@samsung.com>
Cc: Julius Werner <jwerner@chromium.org>
Cc: Simon Glass <sjg@chromium.org>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Marek Vasut <marex@denx.de>

include/configs/exynos5250-dt.h

@@ -37,6 +37,8 @@
 /* Keep L2 Cache Disabled */
 #define CONFIG_SYS_DCACHE_OFF
 
+#define CONFIG_SYS_CACHELINE_SIZE	64
+
 /* Enable ACE acceleration for SHA1 and SHA256 */
 #define CONFIG_EXYNOS_ACE_SHA
 #define CONFIG_SHA_HW_ACCEL