command: Remove the cmd_tbl_t typedef

We should not use typedefs in U-Boot. They cannot be used as forward
declarations which means that header files must include the full header to
access them.

Drop the typedef and rename the struct to remove the _s suffix which is
now not useful.

This requires quite a few header-file additions.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/jffs2.c b/cmd/jffs2.c
index 748a73e..bb47904 100644
--- a/cmd/jffs2.c
+++ b/cmd/jffs2.c
@@ -472,7 +472,8 @@
  * @param argv arguments list
  * @return 0 on success, 1 otherwise
  */
-int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_jffs2_fsload(struct cmd_tbl *cmdtp, int flag, int argc,
+		    char *const argv[])
 {
 	char *fsname;
 	char *filename;
@@ -534,7 +535,7 @@
  * @param argv arguments list
  * @return 0 on success, 1 otherwise
  */
-int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_jffs2_ls(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	char *filename = "/";
 	int ret;
@@ -572,7 +573,8 @@
  * @param argv arguments list
  * @return 0 on success, 1 otherwise
  */
-int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_jffs2_fsinfo(struct cmd_tbl *cmdtp, int flag, int argc,
+		    char *const argv[])
 {
 	struct part_info *part;
 	char *fsname;