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/common/cmd_eeprom.c b/common/cmd_eeprom.c
index c59227d..e598bf1 100644
--- a/common/cmd_eeprom.c
+++ b/common/cmd_eeprom.c
@@ -425,7 +425,7 @@
 #ifdef CONFIG_SYS_I2C_MULTI_EEPROMS
 U_BOOT_CMD(
 	eeprom,	6,	1,	do_eeprom,
-	"eeprom  - EEPROM sub-system\n",
+	"EEPROM sub-system",
 	"read  devaddr addr off cnt\n"
 	"eeprom write devaddr addr off cnt\n"
 	"       - read/write `cnt' bytes from `devaddr` EEPROM at offset `off'\n"
@@ -433,7 +433,7 @@
 #else /* One EEPROM */
 U_BOOT_CMD(
 	eeprom,	5,	1,	do_eeprom,
-	"eeprom  - EEPROM sub-system\n",
+	"EEPROM sub-system",
 	"read  addr off cnt\n"
 	"eeprom write addr off cnt\n"
 	"       - read/write `cnt' bytes at EEPROM offset `off'\n"