kdb: Rename members of struct kdbtab_t

Remove redundant prefix "cmd_" from name of members in struct kdbtab_t
for better readibility.

Suggested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Sumit Garg <sumit.garg@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20210712134620.276667-5-sumit.garg@linaro.org
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>

samples/kdb/kdb_hello.c

@@ -29,10 +29,10 @@ static int kdb_hello_cmd(int argc, const char **argv)
 }
 
 static kdbtab_t hello_cmd = {
-	.cmd_name = "hello",
-	.cmd_func = kdb_hello_cmd,
-	.cmd_usage = "[string]",
-	.cmd_help = "Say Hello World or Hello [string]",
+	.name = "hello",
+	.func = kdb_hello_cmd,
+	.usage = "[string]",
+	.help = "Say Hello World or Hello [string]",
 };
 
 static int __init kdb_hello_cmd_init(void)