msm: emac: move init adapter to post phase2 clocks enablement

EMAC driver maintain some of the field in its internal structure
after reading it from EMAC HW core.  So move init adapter to
post enablement of phase2 clocks to avoid any unclock access.

Change-Id: I8f5a226197f6227fccb9fc7eb6fb6a55dd0d4f85
Signed-off-by: Alok Chauhan <alokc@codeaurora.org>