i2c, multibus, keymile: get rid of EEprom_ivm envvariable

as the keymile boards use now the new i2c multibus/multiadapter
framework, remove the EEprom_ivm Environmentvar, as not longer
needed.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Holger Brunck <holger.brunck@keymile.com>
Tested-By: Holger Brunck <holger.brunck@keymile.com>
diff --git a/board/keymile/common/ivm.c b/board/keymile/common/ivm.c
index a14496f..ac3cc9c 100644
--- a/board/keymile/common/ivm.c
+++ b/board/keymile/common/ivm.c
@@ -315,16 +315,13 @@
 int ivm_read_eeprom(void)
 {
 	uchar i2c_buffer[CONFIG_SYS_IVM_EEPROM_MAX_LEN];
-	char	*buf;
-	unsigned long dev_addr = CONFIG_SYS_IVM_EEPROM_ADR;
 	int ret;
 
-	buf = getenv("EEprom_ivm");
-	i2c_set_bus_num(buf ? (int)simple_strtol(buf, NULL, 10) : 0);
+	i2c_set_bus_num(CONFIG_KM_IVM_BUS);
 	/* add deblocking here */
 	i2c_make_abort();
 
-	ret = i2c_read(dev_addr, 0, 1, i2c_buffer,
+	ret = i2c_read(CONFIG_SYS_IVM_EEPROM_ADR, 0, 1, i2c_buffer,
 		CONFIG_SYS_IVM_EEPROM_MAX_LEN);
 	if (ret != 0) {
 		printf("Error reading EEprom\n");