flash: Rename init_flash_dev to flash_dev_init

Change-Id: I6b9a916053baf09c34100dcb5262a4b66a44bc80
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/flash.c b/flash.c
index 1513843..63a1293 100644
--- a/flash.c
+++ b/flash.c
@@ -30,7 +30,7 @@
 #include "common.h"
 #include "flash.h"
 
-int init_flash_dev(struct mbox_context *context)
+int flash_dev_init(struct mbox_context *context)
 {
 	char *filename = get_dev_mtd();
 	int fd, rc = 0;