mtd: cfi: staticize functions

Staticize a few functions and variables which are no longer exposed.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Stefan Roese <sr@denx.de>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
index 42bc2ef..f3bb727 100644
--- a/drivers/mtd/cfi_flash.c
+++ b/drivers/mtd/cfi_flash.c
@@ -178,7 +178,7 @@
 /*-----------------------------------------------------------------------
  */
 #if defined(CONFIG_ENV_IS_IN_FLASH) || defined(CONFIG_ENV_ADDR_REDUND) || (CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE)
-flash_info_t *flash_get_info(ulong base)
+static flash_info_t *flash_get_info(ulong base)
 {
 	int i;
 	flash_info_t *info;
@@ -355,8 +355,8 @@
 /*
  * Write a proper sized command to the correct address
  */
-void flash_write_cmd (flash_info_t * info, flash_sect_t sect,
-		      uint offset, u32 cmd)
+static void flash_write_cmd(flash_info_t *info, flash_sect_t sect,
+			    uint offset, u32 cmd)
 {
 
 	void *addr;
@@ -2298,7 +2298,7 @@
 /*-----------------------------------------------------------------------
  */
 
-void flash_protect_default(void)
+static void flash_protect_default(void)
 {
 #if defined(CONFIG_SYS_FLASH_AUTOPROTECT_LIST)
 	int i;