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/acpi.c b/cmd/acpi.c
index 203bd93..e9a9161 100644
--- a/cmd/acpi.c
+++ b/cmd/acpi.c
@@ -137,7 +137,7 @@
 	return 0;
 }
 
-static int do_acpi_list(cmd_tbl_t *cmdtp, int flag, int argc,
+static int do_acpi_list(struct cmd_tbl *cmdtp, int flag, int argc,
 			char *const argv[])
 {
 	struct acpi_rsdp *rsdp;
@@ -153,7 +153,7 @@
 	return 0;
 }
 
-static int do_acpi_dump(cmd_tbl_t *cmdtp, int flag, int argc,
+static int do_acpi_dump(struct cmd_tbl *cmdtp, int flag, int argc,
 			char *const argv[])
 {
 	const char *name;