mtd: rawnand: gpio: Rename file

The implementation of the GPIO NAND controller is just "gpio"
with the usecase for NAND implied from the folder nand/raw.

This is not so great when the module gets the name "gpio.ko".
Rename the implementation to nand-gpio.c so the module is
named nand-gpio.ko which is more reasonable.

We put "nand" first instead of "gpio" because the order is
usually <subsystem>-<driver>.c, cf ls drivers/gpio/

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2 files changed