Add variable_buffer shiftLeft(), shiftRight()
Add variable_buffer shiftLeft(), shiftRight()

Change-Id: I29692c971987f8fdf71b31d1200718c097085ede
Reviewed-on: http://gfw160.aus.stglabs.ibm.com:8080/gerrit/17676
Tested-by: Jenkins Server
Reviewed-by: Richard J. Knight <94c04f3910596886be97211d492ad29f0ba29cd5@us.ibm.com>
Reviewed-by: PRACHI GUPTA <25a72946fc4ec2539bba3cff1fbb2916af6a7649@us.ibm.com>
Reviewed-by: Brian Silver <af0eed78d989d9597decc8b92fa6db01ef8b58e0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot