drivers: flash: NXP KL2X/KW4xZ: Add device tree support

Add device tree support for the "nxp,kinetis-ftfa" flash controller used
on the NXP KL2X and KW4xZ SoCs.

Fixes: #5788

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
6 files changed