linuxptp: switch to V2.0-based release branch
linuxptp: switch to V2.0-based release branch

- rebased all patches to Linuxptp 2.0

Signed-off-by: Eric Ruei <a146d3b40ff91d2654028e544102c982becbdb29@ti.com>
Signed-off-by: Jacob Stiffler <0ec61db87821c27ca8ee6f3e24c6f93fdbb785d4@ti.com>

rcn-ee/meta-processor-sdk,rcn-ee/meta-processor-sdk,rcn-ee/meta-processor-sdk