General help message cleanup

Many of the help messages were not really helpful; for example, many
commands that take no arguments would not print a correct synopsis
line, but "No additional help available." which is not exactly wrong,
but not helpful either.

Commit ``Make "usage" messages more helpful.'' changed this
partially. But it also became clear that lots of "Usage" and "Help"
messages (fields "usage" and "help" in struct cmd_tbl_s respective)
were actually redundant.

This patch cleans this up - for example:

Before:
	=> help dtt
	dtt - Digital Thermometer and Thermostat

	Usage:
	dtt         - Read temperature from digital thermometer and thermostat.

After:
	=> help dtt
	dtt - Read temperature from Digital Thermometer and Thermostat

	Usage:
	dtt

Signed-off-by: Wolfgang Denk <wd@denx.de>

1 files changed, 2 insertions, 2 deletions

diff --git a/board/keymile/common/keymile_hdlc_enet.c b/board/keymile/common/keymile_hdlc_enet.c
index 57978800f..2e913adc5 100644
--- a/board/keymile/common/keymile_hdlc_enet.c
+++ b/board/keymile/common/keymile_hdlc_enet.c
@@ -591,7 +591,7 @@ int hdlc_enet_stest(struct cmd_tbl_s *a, int b, int c, char **d)
 U_BOOT_CMD(
 	stest, 1, 1, hdlc_enet_stest,
 	"simple send test for hdlc_enet",
-	"no arguments\n"
+	""
 );
 /* simple receive test routine */
 int hdlc_enet_rtest(struct cmd_tbl_s *a, int b, int c, char **d)
@@ -613,7 +613,7 @@ int hdlc_enet_rtest(struct cmd_tbl_s *a, int b, int c, char **d)
 U_BOOT_CMD(
 	rtest, 1, 1, hdlc_enet_rtest,
 	"simple receive test for hdlc_enet",
-	"no arguments\n"
+	""
 );
 #endif