SPEAr: Enable CONFIG_SYS_FLASH_PROTECTION

This patch enables flash protection(lock/unlock) for CFI devices.
This is necessary because the Parallel NOR flash connected on the spear
boards, M28W64, can be locked/unlocked on a sector basis. Moreover, all its
sectors are in locked state at reset and these have to be unlocked explicitly
before being erased or written.

Signed-off-by: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Amit Virdi <amit.virdi@st.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>

include/configs/spear3xx_evb.h

@@ -111,6 +111,7 @@
 #define CONFIG_FLASH_CFI_DRIVER
 
 #if defined(CONFIG_SPEAR310)
+#define CONFIG_SYS_FLASH_PROTECTION
 #define CONFIG_SYS_FLASH_BASE			0x50000000
 #define CONFIG_SYS_CS1_FLASH_BASE		0x60000000
 #define CONFIG_SYS_CS2_FLASH_BASE		0x70000000
@@ -126,6 +127,7 @@
 #define CONFIG_SYS_MAX_FLASH_BANKS		6
 
 #elif defined(CONFIG_SPEAR320)
+#define CONFIG_SYS_FLASH_PROTECTION
 #define CONFIG_SYS_FLASH_BASE			0x44000000
 #define CONFIG_SYS_CS1_FLASH_BASE		0x45000000
 #define CONFIG_SYS_CS2_FLASH_BASE		0x46000000