decode-vaio: Scan more i2c buses

While the laptop I originally developed decode-vaio on, only had 5 i2c
buses, there could be more on other models, and there are definitely
more on the system I use to test the script (using i2c-stub) these
days. So look for the VAIO EEPROM on up to 32 i2c buses to be on the
safe side.

Signed-off-by: Jean Delvare <jdelvare@suse.de>

eeprom/decode-vaio

@@ -237,7 +237,7 @@ END
 	print("\n");
 }
 
-for (my $i = 0, $found=0; $i <= 4 && !$found; $i++)
+for (my $i = 0, $found=0; $i <= 31 && !$found; $i++)
 {
 	if (-r "/sys/bus/i2c/devices/$i-0057/eeprom")
 	{