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-keystone/cmd_clock.c b/arch/arm/mach-keystone/cmd_clock.c
index 667826b..7165d66 100644
--- a/arch/arm/mach-keystone/cmd_clock.c
+++ b/arch/arm/mach-keystone/cmd_clock.c
@@ -19,7 +19,7 @@
 	.pll_od = 2,
 };
 
-int do_pll_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_pll_cmd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	if (argc != 5)
 		goto pll_cmd_usage;
@@ -63,7 +63,8 @@
 	PLLSET_CMD_LIST " <mult> <div> <OD>\n"
 );
 
-int do_getclk_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_getclk_cmd(struct cmd_tbl *cmdtp, int flag, int argc,
+		  char *const argv[])
 {
 	unsigned int clk;
 	unsigned long freq;
@@ -92,7 +93,7 @@
 	CLOCK_INDEXES_LIST
 );
 
-int do_psc_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+int do_psc_cmd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	int	psc_module;
 	int	res;