[PATCH] cmd: tlv_eeprom: fix signature for populate_serial_number function

[Josua Mayer <josua@solid-run.com>]

populate_serial_number is not used internally for the tlv_eeprom
command, but rather provided as a library function for external use..
Remove the devnum that had recently been added by mistake, returning the
function to its original signature.

Instead place a 0-initialised member variable inside the function to
same purpose, along with a node that it only supports reading from the
first EEPROM in the system.

Fixes: dfda0c0 ("cmd: tlv_eeprom: remove use of global variable current_dev")
Signed-off-by: Josua Mayer <josua@solid-run.com>
Cc: Stefan Roese <sr@denx.de>
Cc: Baruch Siach <baruch@tkos.co.il>
Cc: Heinrich Schuchardt <xypron.glpk@gmx.de>
---
 cmd/tlv_eeprom.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/cmd/tlv_eeprom.c b/cmd/tlv_eeprom.c
index 79796394c5c..0ca4d714645 100644
--- a/cmd/tlv_eeprom.c
+++ b/cmd/tlv_eeprom.c
@@ -1100,11 +1100,12 @@ int mac_read_from_eeprom(void)
  *
  *  This function must be called after relocation.
  */
-int populate_serial_number(int devnum)
+int populate_serial_number(void)
 {
 	char serialstr[257];
 	int eeprom_index;
 	struct tlvinfo_tlv *eeprom_tlv;
+	int devnum = 0; // TODO: support multiple EEPROMs
 
 	if (env_get("serial#"))
 		return 0;
-- 
2.35.3