mmc: msm_sdcc: remove CONFIG_MMC_MSM_SDIO_SUPPORT completely

CONFIG_MMC_MSM_SDIO_SUPPORT config option was added
to indicate that host controller is capable of detecting
SDIO operational interrupt. But all the current SDCC
HW revisions support the SDIO operational interrupt
detection, there is no need of this config option any more.

Change-Id: I708ddf5b14286f94853d47bbbcee426b12cb9d85
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>