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/arch/arm/mach-uniphier/dram/cmd_ddrphy.c b/arch/arm/mach-uniphier/dram/cmd_ddrphy.c
index a616a2a..476c5b3 100644
--- a/arch/arm/mach-uniphier/dram/cmd_ddrphy.c
+++ b/arch/arm/mach-uniphier/dram/cmd_ddrphy.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <command.h>
 #include <stdio.h>
 #include <linux/io.h>
 #include <linux/printk.h>
@@ -261,7 +262,8 @@
 	}
 }
 
-static int do_ddr(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+static int do_ddr(struct cmd_tbl *cmdtp, int flag, int argc,
+		  char *const argv[])
 {
 	const struct uniphier_ddrphy_param *param;
 	char *cmd;