[GPIO][PCBA]Add 8903 MP PCBA stage

PCB Variant Table:
 GPIO_99	GPIO_98		GPIO_97
 0		 0		 0		EP0
 0		 0		 1		EP1
 0		 1		 0		EP2
 0		 1		 1		FP
 1               0               0              MP
 1               0               1              MP-8903MB_001

RiskArea: GPIO

Change-Id: I8dd2fb0a23b592d111e8c0c78389484fadab90ff
1 file changed