ARM: dts: msm: EMAC changes for qcs405

- Added support for EMAC in dts
- Added support for GPIOs mapped for EMAC.

Change-Id: I34e6eb03a52738042358f4650e0a896719e83bba
Acked-by: Suraj Jaiswal <jsuraj@qti.qualcomm.com>
Acked-by: vravik <vravik@qti.qualcomm.com>
Signed-off-by: Mohammed Javid <mjavid@codeaurora.org>