data-kernel: EMAC: Ethernet v2 bring up on EMAC_HW_v2_1_2

Changes needed in PHY tx delay settings for RGMII Non-
ID mode.
IO macro settings updated for EMAC_HW_v2_1_2.

Change-Id: I527c6e7c5b09cc5f579986eeb4eab31f45e81a73
CRs-Fixed:
Acked-by: Nisha Menon <nmenon@qti.qualcomm.com>
Signed-off-by: Sunil Paidimarri <hisunil@codeaurora.org>