arm: socfpga: cache: Define cacheline size

The Cortex-A9 has 32-byte long L1 cachelines. Define this value.
Signed-off-by: NMarek Vasut <marex@denx.de>
Cc: Chin Liang See <clsee@altera.com>
Cc: Dinh Nguyen <dinguyen@altera.com>
Cc: Albert Aribaud <albert.u.boot@aribaud.net>
Cc: Tom Rini <trini@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Pavel Machek <pavel@denx.de>
Acked-by: NPavel Machek <pavel@denx.de>

include/configs/socfpga_cyclone5.h

@@ -26,6 +26,8 @@
 #define CONFIG_SOCFPGA
 #define CONFIG_CLOCKS
 
+#define CONFIG_SYS_CACHELINE_SIZE	32
+
 /* base address for .text section */
 #ifdef CONFIG_SOCFPGA_VIRTUAL_TARGET
 #define CONFIG_SYS_TEXT_BASE		0x08000040