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/renesas/sh7785lcr/rtl8169_mac.c b/board/renesas/sh7785lcr/rtl8169_mac.c
index 6d0bbc0..634efb4 100644
--- a/board/renesas/sh7785lcr/rtl8169_mac.c
+++ b/board/renesas/sh7785lcr/rtl8169_mac.c
@@ -325,7 +325,7 @@ U_BOOT_CMD(
 	setmac,	2,	1,	do_set_mac,
 	"write MAC address for RTL8110SCL",
 	"\n"
-	"setmac <mac address> - write MAC address for RTL8110SCL\n"
+	"setmac <mac address> - write MAC address for RTL8110SCL"
 );
 
 int do_print_mac(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
@@ -344,5 +344,5 @@ U_BOOT_CMD(
 	printmac,	1,	1,	do_print_mac,
 	"print MAC address for RTL8110",
 	"\n"
-	"    - print MAC address for RTL8110\n"
+	"    - print MAC address for RTL8110"
 );