cmd: blkmap: Make map_handlers[] and its .fn static

These are only used in cmd/blkmap.c.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/blkmap.c b/cmd/blkmap.c
index b34c013..ef74ebc 100644
--- a/cmd/blkmap.c
+++ b/cmd/blkmap.c
@@ -25,7 +25,8 @@
 	map_parser_fn fn;
 };
 
-int do_blkmap_map_linear(struct map_ctx *ctx, int argc, char *const argv[])
+static int do_blkmap_map_linear(struct map_ctx *ctx, int argc,
+				char *const argv[])
 {
 	struct blk_desc *lbd;
 	int err, ldevnum;
@@ -58,7 +59,7 @@
 	return CMD_RET_SUCCESS;
 }
 
-int do_blkmap_map_mem(struct map_ctx *ctx, int argc, char *const argv[])
+static int do_blkmap_map_mem(struct map_ctx *ctx, int argc, char *const argv[])
 {
 	phys_addr_t addr;
 	int err;
@@ -80,7 +81,7 @@
 	return CMD_RET_SUCCESS;
 }
 
-struct map_handler map_handlers[] = {
+static struct map_handler map_handlers[] = {
 	{ .name = "linear", .fn = do_blkmap_map_linear },
 	{ .name = "mem", .fn = do_blkmap_map_mem },