utils: fix C style in header file

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

utils/utils.h

@@ -51,7 +51,7 @@ int blobmsg_list_fill(struct blobmsg_list *list, void *data, int len, bool array
 void blobmsg_list_free(struct blobmsg_list *list);
 bool blobmsg_list_equal(struct blobmsg_list *l1, struct blobmsg_list *l2);
 void blobmsg_list_move(struct blobmsg_list *list, struct blobmsg_list *src);
-char* get_cmdline_val(const char* name, char* out, int len);
+char *get_cmdline_val(const char *name, char *out, int len);
 
 int patch_fd(const char *device, int fd, int flags);
 int patch_stdio(const char *device);