UPSTREAM: mmc: cqhci: Add cqhci_deactivate()

Host controllers can reset CQHCI either directly or as a consequence of
host controller reset. Add cqhci_deactivate() which puts the CQHCI
driver into a state that is consistent with that.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Link: https://lore.kernel.org/r/1583503724-13943-2-git-send-email-vbadigan@codeaurora.org


Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Bug: 158284839
Change-Id: Iaa1feaef3445ada7c8cb657fc662cd3287e6d683
(cherry picked from commit 0ffa6cfb)
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>