mmc: sdhci-msm: read this reg IPCAT_MINOR_MASK to sdhc host

When sdcard is removed seeing crash during exit debug
mode. This is fixed by reading IPCAT_MINOR_MASK contents
in probe and saving in sdhc_msm_host minor variable.

Change-Id: Ic2c2e9ffd64ca69778e56e8d93956db6ec36e310
Signed-off-by: Chetan C R <cchinnad@codeaurora.org>