data-kernel: EMAC: Fix clock config in probe for always on PHY

Set 10Mbps config in probe only for PHY which is not always on.

Change-Id: I29696e7d2a7bc10b85d1bff31361297258f38a92
CRs-Fixed: 2282052
Acked-by: Rahul Kawadgave <rahulak@qti.qualcomm.com>
Signed-off-by: Sunil Paidimarri <hisunil@codeaurora.org>