linux-phytec-ti

ARM: dts: am437x-gp/epos-evm: fix panel compatible

The LCD panel on AM4 GP EVMs and ePOS boards seems to be
osd070t1718-19ts. The current dts files say osd057T0559-34ts. Possibly
the panel has changed since the early EVMs, or there has been a mistake
with the panel type.

Update the DT files accordingly.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>