blackfin: Change SMC dcplb entry flag to cover 16M address region

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>

arch/blackfin/lib/board.c

@@ -142,7 +142,8 @@ void init_cplbtables(void)
 	++i;
 #if defined(__ADSPBF60x__)
 	icplb_add(0x0, 0x0);
-	dcplb_add(CONFIG_SYS_FLASH_BASE, SDRAM_EBIU);
+	dcplb_add(CONFIG_SYS_FLASH_BASE, PAGE_SIZE_16MB | CPLB_DIRTY |
+		CPLB_SUPV_WR | CPLB_USER_WR | CPLB_USER_RD | CPLB_VALID);
 	++i;
 #endif