ARM: dts: msm: bus configuration for emac

Bus vectors and vote configurations are added for
ethqos.

Voting configuration are No vote, 10 Mbps vote,
100 Mbps vote, 1000 Mbps Vote.

Change-Id: I190c0d02ccb67209eec0b7ff88848003c4169414
Acked-by: Abhishek Chauhan <abchauha@qti.qualcomm.com>
Signed-off-by: Sunil Paidimarri <hisunil@codeaurora.org>