linux-phytec-ti

ARM: dts: keystone-k2g-evm: Add QSPI flash DT entry

K2G EVM has a Spansion s25fl512s flash at CS0 connected to QSPI.
Add DT entries for the same.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>