IPMI OEM Get BIC GPIO State

Register an IPMI command handler - NetFn: 0x38 Cmd: 0x03.
Send command through IPMB to get BIC GPIO state.
Add Meta IANA definition for future utilization.

Limitation:
1. Could only get the state of BIC GPIOs which are configured as GPIO
2. Couldn't get all BIC GPIO states

Test Case:
Call IPMI OEM get BIC GPIO state

Signed-off-by: Bonnie Lo <Bonnie_Lo@wiwynn.com>
Change-Id: Idda8d4c532b2971c14662e7b34ea101cf584fa22
3 files changed