mmc: core: fold mmc_set_bus_width calls into sdio_enable_4bit_bus.
mmc: core: fold mmc_set_bus_width calls into sdio_enable_4bit_bus.

Every call to sdio_enable_4bit_bus is followed (on success) by a call
to mmc_set_bus_width().

To simplify the code, include those calls directly in
sdio_enable_4bit_bus().

Signed-off-by: NeilBrown <822ec91a7ef82248fd36162ca8ac3283eba70848@brown.name>
Signed-off-by: Ulf Hansson <fe47b31f388f85ce6ddf64bf3a0cf6b46077d0e6@linaro.org>

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