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>

3 files changed, 10 insertions, 9 deletions

diff --git a/board/tqc/tqm5200/cmd_stk52xx.c b/board/tqc/tqm5200/cmd_stk52xx.c
index 20632a7..e309beb 100644
--- a/board/tqc/tqm5200/cmd_stk52xx.c
+++ b/board/tqc/tqm5200/cmd_stk52xx.c
@@ -1201,21 +1201,21 @@ U_BOOT_CMD(
 	"sound square [duration] [freq] [channel]\n"
 	"    - generate squarewave for 'duration' ms with frequency 'freq'\n"
 	"      on left \"l\" or right \"r\" channel\n"
-	"pcm1772 reg val\n"
+	"pcm1772 reg val"
 );
 
 U_BOOT_CMD(
 	wav ,    3,    1,     cmd_wav,
 	"play wav file",
 	"[addr] [bytes]\n"
-	"    - play wav file at address 'addr' with length 'bytes'\n"
+	"    - play wav file at address 'addr' with length 'bytes'"
 );
 
 U_BOOT_CMD(
 	beep ,    2,    1,     cmd_beep,
 	"play short beep",
 	"[channel]\n"
-	"    - play short beep on \"l\"eft or \"r\"ight channel\n"
+	"    - play short beep on \"l\"eft or \"r\"ight channel"
 );
 #endif /* CONFIG_STK52XX  || CONFIG_FO300 */
 
@@ -1228,10 +1228,11 @@ U_BOOT_CMD(
 	"fkt can\n"
 	"     - loopback plug for X83 required\n"
 	"fkt rs232 number\n"
-	"     - loopback plug(s) for X2 required\n"
+	"     - loopback plug(s) for X2 required"
 #ifndef CONFIG_TQM5200S
+	"\n"
 	"fkt backlight on/off\n"
-	"     - switch backlight on or off\n"
+	"     - switch backlight on or off"
 #endif /* !CONFIG_TQM5200S */
 );
 #elif defined(CONFIG_FO300)
@@ -1241,7 +1242,7 @@ U_BOOT_CMD(
 	"fkt can\n"
 	"     - loopback plug for X16/X29 required\n"
 	"fkt rs232 number\n"
-	"     - loopback plug(s) for X21/X22 required\n"
+	"     - loopback plug(s) for X21/X22 required"
 );
 #endif
 #endif
diff --git a/board/tqc/tqm5200/cmd_tb5200.c b/board/tqc/tqm5200/cmd_tb5200.c
index b9c9e7e..578e716 100644
--- a/board/tqc/tqm5200/cmd_tb5200.c
+++ b/board/tqc/tqm5200/cmd_tb5200.c
@@ -91,13 +91,13 @@ int cmd_backlight(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	led ,	2,	1,	cmd_led,
 	"switch status LED on or off",
-	"on/off\n"
+	"on/off"
 );
 
 U_BOOT_CMD(
 	backlight ,	2,	1,	cmd_backlight,
 	"switch backlight on or off",
-	"on/off\n"
+	"on/off"
 	);
 
 #endif /* CONFIG_STK52XX */
diff --git a/board/tqc/tqm8272/tqm8272.c b/board/tqc/tqm8272/tqm8272.c
index 5bc080f..92f74a3 100644
--- a/board/tqc/tqm8272/tqm8272.c
+++ b/board/tqc/tqm8272/tqm8272.c
@@ -867,7 +867,7 @@ int do_hwib_dump (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
 U_BOOT_CMD(
 	  hwib, 1,	1,	do_hwib_dump,
 	  "dump HWIB'",
-	  "\n"
+	  ""
 );
 
 #ifdef CONFIG_SYS_UPDATE_FLASH_SIZE