meta-fii/meta-kudo: Modify kudo-fw.sh SCP EEPROM update methods

1. Update both primary and backup SCP EEPROMS when updating the BIOS
Modify the
2. Switch the SCP mux correctly on EVT and DVT hw


Signed-off-by: XP Chen <xiao-peng.chen@fii-na.com>
Change-Id: Idd07f4b57bfd2eaa13795f60b653915f1cf7c161