firmware-update: Fix for firmware update status

Issue: Get firmware update status shows as 95% instead 100%

Fix: Provided fix to show correct status of firmware update status

Tested:
1. Updated BMC firmware using fwpiaupd.efi utility
>fwpiaupd.efi -ni -u -o -b -pia <Binary file>
2. Get firmware update status
Command:  ipmitool raw 0x08 0x2a
Response: 03 64 00

Signed-off-by: jayaprakash Mutyala <mutyalax.jayaprakash@intel.com>
Change-Id: I7376c924cc3dc09169d001e358fb0bba69fa6ab7
1 file changed