Command usage cleanup

Remove command name from all command "usage" fields and update
common/command.c to display "name - usage" instead of
just "usage". Also remove newlines from command usage fields.

Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
diff --git a/board/amcc/taihu/lcd.c b/board/amcc/taihu/lcd.c
index 7cc094a..6b68f33 100644
--- a/board/amcc/taihu/lcd.c
+++ b/board/amcc/taihu/lcd.c
@@ -232,25 +232,25 @@
 
 U_BOOT_CMD(
 	lcd_cls, 1, 1, do_lcd_clear,
-	"lcd_cls - lcd clear display\n",
+	"lcd clear display",
 	NULL
 	);
 
 U_BOOT_CMD(
 	lcd_puts, 2, 1, do_lcd_puts,
-	"lcd_puts - display string on lcd\n",
+	"display string on lcd",
 	"<string> - <string> to be displayed\n"
 	);
 
 U_BOOT_CMD(
 	lcd_putc, 2, 1, do_lcd_putc,
-	"lcd_putc - display char on lcd\n",
+	"display char on lcd",
 	"<char> - <char> to be displayed\n"
 	);
 
 U_BOOT_CMD(
 	lcd_cur, 3, 1, do_lcd_cur,
-	"lcd_cur - shift cursor on lcd\n",
+	"shift cursor on lcd",
 	"<count> <dir> - shift cursor on lcd <count> times, direction is <dir> \n"
 	" <count> - 0..31\n"
 	" <dir>   - 0=backward 1=forward\n"