spi: flash: set log2_block_size

source/drivers/spi_flash.c

@@ -3,6 +3,7 @@
 #include <stdlib.h>
 #include <string.h>
 
+#include <bitops.h>
 #include <flash.h>
 #include <macros.h>
 #include <spi.h>
@@ -131,6 +132,7 @@ struct flash_dev *flash_probe(void)
 		goto err_free_dev;
 
 	dev->ops = &spi_flash_ops;
+	dev->log2_block_size = ilog2(4 * KIB);
 
 	return dev;