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/scsi.c b/cmd/scsi.c
index e81194d..5f710d2 100644
--- a/cmd/scsi.c
+++ b/cmd/scsi.c
@@ -17,7 +17,8 @@
 /*
  * scsi boot command intepreter. Derived from diskboot
  */
-static int do_scsiboot(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+static int do_scsiboot(struct cmd_tbl *cmdtp, int flag, int argc,
+		       char *const argv[])
 {
 	return common_diskboot(cmdtp, "scsi", argc, argv);
 }
@@ -25,7 +26,8 @@
 /*
  * scsi command intepreter
  */
-static int do_scsi(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+static int do_scsi(struct cmd_tbl *cmdtp, int flag, int argc,
+		   char *const argv[])
 {
 	int ret;