compulab: eeprom: select i2c bus when querying for board rev

Add support for selecting which eeprom is queried for board revision by
extending cl_eeprom_get_board_rev() to accept an i2c bus number.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
diff --git a/board/compulab/common/eeprom.c b/board/compulab/common/eeprom.c
index 77bcea4..aaacd2e 100644
--- a/board/compulab/common/eeprom.c
+++ b/board/compulab/common/eeprom.c
@@ -121,7 +121,7 @@
  * Routine: cl_eeprom_get_board_rev
  * Description: read system revision from eeprom
  */
-u32 cl_eeprom_get_board_rev(void)
+u32 cl_eeprom_get_board_rev(uint eeprom_bus)
 {
 	char str[5]; /* Legacy representation can contain at most 4 digits */
 	uint offset = BOARD_REV_OFFSET_LEGACY;
@@ -129,7 +129,7 @@
 	if (board_rev)
 		return board_rev;
 
-	if (cl_eeprom_setup(CONFIG_SYS_I2C_EEPROM_BUS))
+	if (cl_eeprom_setup(eeprom_bus))
 		return 0;
 
 	if (cl_eeprom_layout != LAYOUT_LEGACY)