mmc: sdhci-msm: Utilize bulk clock API

By stuffing the runtime controlled clocks into a clk_bulk_data array we
can utilize the newly introduced bulk clock operations and clean up the
error paths. This allow us to handle additional clocks in subsequent
patch, without the added complexity.

Cc: Ritesh Harjani <riteshh@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Jeremy McNicoll <jeremymc@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>