mmc: core: Remove unnecessary validations for bus_ops callbacks

Due to the removal of the Kconfig option MMC_UNSAFE_RESUME, several
validations of a present bus_ops callback became redundant. Let's
remove these.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <chris@printf.net>
2 files changed