flash: Rename init_flash_dev to flash_dev_init

Change-Id: I6b9a916053baf09c34100dcb5262a4b66a44bc80
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/test/write_flash.c b/test/write_flash.c
index b09e7de..4f37bef 100644
--- a/test/write_flash.c
+++ b/test/write_flash.c
@@ -63,7 +63,7 @@
 
 	mbox_vlog = &mbox_log_console;
 
-	rc = init_flash_dev(context);
+	rc = flash_dev_init(context);
 	assert(rc == 0);
 
 	map = mmap(NULL, MEM_SIZE, PROT_READ, MAP_PRIVATE, tmp->fd, 0);