linux-phytec-ti

ARM: dts: am57xx-evm: Update mmc2 ddr iodelay for pg 2.0

As per Data manual for am572x PG2.0, MMC2 DDR mode
does not need any IOdelay configuration so removing
the same from the dts file.

Document reference:
SPRS953B, AM572x Silicon Revision 2.0 data manual,
revised November 2016.

Signed-off-by: Ravikumar Kattekola <rk@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>