spi: meson: Select REGMAP_MMIO
spi: meson: Select REGMAP_MMIO

The Meson SPIFC driver uses regmap mmio functions and so it must
select REGMAP_MMIO to avoid the following build error:

spi-meson-spifc.c: undefined reference to `devm_regmap_init_mmio_clk'

Reported-by: Jim Davis <2c206a2580fbbd807f33aa755406225080803cdf@gmail.com>
Signed-off-by: Beniamino Galvani <0a204c0ed8670f52f51e6619404e025b8f375a15@gmail.com>
Signed-off-by: Mark Brown <b51b9a92386687a9ac927cebfa0f978adeb8cea5@kernel.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs