ARM: dts: msm: Update AXI bus votes for EMAC in sdxpoorwills

Update ab votes for AXI bus to support bi-directional data rates.

Change-Id: I85936c218f51667e8dcc176aa13a41605dd596af
CRs-Fixed: 2283650
Acked-by: Rahul Kawadgave <rahulak@qti.qualcomm.com>
Signed-off-by: Sunil Paidimarri <hisunil@codeaurora.org>